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The Hardy Boys books in order

Carolyn Keene

The Hardy Boys is a series of 107 books by Carolyn Keene: 11,103 pages in the 64 with a known length, about 204 hours of reading. Shown in the numbered order.

107
books
11,103
pages in 64 of them
204 hours
to read those 64
408 days
at 30 minutes a day
1 The Tower Treasure 1927 3.3 h 2 The House on the Cliff 1927 3.5 h The Secret of the Old Mill 1927 3.2 h 5 The Missing Chums 1928 3.2 h 6 The Shore Road Mystery 1928 3.4 h Hunting for Hidden Gold 1928 3.3 h 7 The Secret of the Caves 1929 3.5 h 8 The Mystery of Cabin Island 1929 3.5 h 9 The Great Airport Mystery 1930 3.2 h What Happened at Midnight 1931 3.2 h While the Clock Ticked 1932 3.2 h 12 Footprints under the Window 1933 3.3 h The Mark on the Door 1934 3.2 h
The Hidden Harbor Mystery 1935 length not known
15 The Sinister Signpost 1936 3.5 h A Figure in Hiding 1937 3.3 h
The Secret Warning 1938 length not known
The Twisted Claw 1939 3.5 h The Disappearing Floor 1940 3.2 h The Mystery of the Flying Express 1941 3.3 h The Clue of the Broken Blade 1942 3.3 h The Flickering Torch Mystery 1943 3.3 h The Melted Coins 1944 3.3 h The Short-Wave Mystery 1945 3.4 h The Secret Panel 1946 3.5 h
The Phantom Freighter 1947 length not known
The Secret of Skull Mountain 1948 3.3 h The Sign of the Crooked Arrow 1949 2.9 h The Secret of the Lost Tunnel 1950 3.2 h The Wailing Siren Mystery 1951 3.3 h The Secret of Wildcat Swamp 1952 3.3 h The Crisscross Shadow 1953 3.1 h 34 The Hooded Hawk Mystery 1954 2.9 h The Yellow Feather Mystery 1954 3.4 h
The Clue in the Embers 1956 length not known
The Secret of Pirates' Hill 1957 3.3 h The Ghost at Skeleton Rock 1958 3.1 h
The Hardy Boys Detective Handbook 1959 length not known
The Mystery at Devil's Paw 1959 length not known
The Mystery of the Chinese Junk 1959 2.9 h
Mystery of the Desert Giant 1960 length not known
The Clue of the Screeching Owl 1962 2.9 h The Viking Symbol Mystery 1962 3.2 h The Mystery of the Aztec Warrior 1964 3.1 h
The Haunted Fort 1965 length not known
The Mystery of the Spiral Bridge 1966 2.9 h The Secret Agent on Flight 101 1967 2.9 h
Mystery of the Whale Tattoo 1968 length not known
The Arctic Patrol Mystery 1969 length not known
The Bombay Boomerang 1970 length not known
Danger on Vampire Trail 1971 2.9 h
The Masked Monkey 1972 length not known
The Shattered Helmet 1973 2.9 h The Clue of the Hissing Serpent 1974 2.9 h The Mysterious Caravan 1975 2.9 h The Witchmaster's Key 1976 3.3 h The Jungle Pyramid 1977 3.1 h
The Firebird Rocket 1978 length not known
59 Night of the Werewolf 1979 3.3 h
Mystery of the Samurai Sword 1979 length not known
The Sting of the Scorpion 1979 2.9 h 61 The Pentagon Spy 1980 3.3 h 63 The Mummy Case 1980 3.3 h
Mystery of Smugglers Cove 1980 length not known
The Apeman's Secret 1980 length not known
The Four-Headed Dragon 1981 3.3 h The Infinity Clue 1981 3.5 h
The Outlaw's Silver 1981 length not known
The Stone Idol 1981 3.3 h The Submarine Caper 1981 3.4 h
The Vanishing Thieves 1981 length not known
Game Plan for Disaster 1982 3.8 h The Billion Dollar Ransom 1982 3.5 h The Voodoo Plot 1982 3.5 h Tic-Tac-Terror 1982 3.8 h
Track of the Zombie 1982 length not known
Trapped at Sea 1982 length not known
The Crimson Flame 1983 length not known
The Skyfire Puzzle 1985 length not known
Cult of Crime 1987 2.8 h Dead on Target 1987 2.8 h Evil, Inc. 1987 2.8 h
Cast of Criminals 1989 length not known
Running on Empty 1990 length not known
The Last Laugh 1990 1.5 h
Fear on Wheels 1991 length not known
Crime in the Kennel 1995 2.7 h
Cross-Country Crime 1995 length not known
The Search for the Snow Leopard 1996 2.9 h
River Rats 1997 length not known
Eye on Crime 1998 length not known
A Will to Survive 1999 length not known
The Caribbean Cruise Caper 1999 length not known
The Hunt for the Four Brothers 1999 length not known
A Game Called Chaos 2000 length not known
Daredevils 2000 length not known
Skin & Bones 2000 length not known
The End of the Trail 2000 length not known
Training for Trouble 2000 length not known
Crime in the Cards 2001 length not known
Past and Present Danger 2001 length not known
The Castle Conundrum 2001 length not known
Trouble Times Two 2001 length not known
Passport to Danger 2003 length not known
The Dangerous Transmission 2004 length not known
Warehouse Rumble 2004 length not known
Murder House 2008 2.9 h

Bar height shows length. Books without a number have no number in our records.

The books

  1. 1

    The Tower Treasure 1927 3.3 h

    A dying criminal confesses that his loot has been stored "in the tower."

  2. 2

    The House on the Cliff 1927 3.5 h

    When Mr. Hardy disappears while investigating a mystery surrounding a vacant house rumored to be either haunted or an abode for criminals, the Hardy Boys search for the truth.

  3. The Secret of the Old Mill 1927 3.2 h

    Teenage detectives Frank and Joe Hardy investigate a case of counterfeiting.

  4. 5

    The Missing Chums 1928 3.2 h

    A series of bizarre events in their home town lead the Hardy Boys on a trail of robbers and kidnappers.

  5. 6

    The Shore Road Mystery 1928 3.4 h

    When the Hardy boys eagerly agree to assist their friend Jack Dodd and his father in locating a family treasure, the two young detectives are unaware of the baffling complications…

  6. Hunting for Hidden Gold 1928 3.3 h

    Timber wolves, a Rocky Mountain blizzard, and a mine cave-in are only a few of the perils Frank and Joe Hardy encounter during their search for the principal members of a…

  7. 7

    The Secret of the Caves 1929 3.5 h

    Triggered by the disappearance of a brilliant young professor, this mystery takes the Hardy boys first to Kenworthy College, where they find a puzzling message on an examination…

  8. 8

    The Mystery of Cabin Island 1929 3.5 h

    The Hardy boys are elated over their good luck when wealthy Elroy Jefferson invites them to spend Christmas vacation at his private retreat on Cabin Island.

  9. 9

    The Great Airport Mystery 1930 3.2 h

    Valuable electronic parts containing platinum are being stolen from shipments made by Stanwide Mining Equipment Company's cargo planes, and Frank and Joe Hardy are called upon to…

  10. What Happened at Midnight 1931 3.2 h

    For cliffhanging suspense and thrilling action read THE HARDY BOYS MYSTERY STORIES- featuring the thrilling adventures of America's favorite detective duo, Frank and Joe Hardy.

  11. While the Clock Ticked 1932 3.2 h

    Frank and Joe solve the mystery of the secret locked room in the spooky Dalrymple Mansion.

  12. 12

    Footprints under the Window 1933 3.3 h

    A plot to steal a top-secret instrument vital to the United States space program poses a challenging case for Frank and Joe Hardy.

  13. The Mark on the Door 1934 3.2 h

    Shortly after his arrival in the United States, a Japanese business tycoon mysteriously disappears.

  14. The Hidden Harbor Mystery 1935 length not known

  15. 15

    The Sinister Signpost 1936 3.5 h

    Racing cars!

  16. A Figure in Hiding 1937 3.3 h

    While investigating the theft of a valuable idol, Frank and Joe enounter a terrified business woman, a walking mummy, and a weird glass eye.

  17. The Secret Warning 1938 length not known

  18. The Twisted Claw 1939 3.5 h

    A series of museum thefts launch the Hardy boys on this baffling mystery.

  19. The Disappearing Floor 1940 3.2 h

    Once again Frank and Joe Hardy take on a puzzling case when their famous detective father asks the boys to assist him in tracking down a notorious jewel thief and his accomplices.

  20. The Mystery of the Flying Express 1941 3.3 h

    A sleek new hydrofoil is scheduled to start ferrying passengers between Bayport and Cape Cutlass.

  21. The Clue of the Broken Blade 1942 3.3 h

    Frank and Joe Hardy become involved in an intriguing mystery which revolves around their fencing master, Ettore Russo.

  22. The Flickering Torch Mystery 1943 3.3 h

    Two unexplainable plane crashes near an airport on the East Coast plunge Frank and Joe Hardy into a bizarre case.

  23. The Melted Coins 1944 3.3 h

    Frank and Joe Hardy suspect that their best friend Chet Morton is the victim of a summer school swindle and offer to help get his money back.

  24. The Short-Wave Mystery 1945 3.4 h

    When thieves hijack a collection of stuffed animals from a country auction, Frank and Joe Hardy pursue the getaway car and are drawn into a thrilling mystery.

  25. The Secret Panel 1946 3.5 h

    Another exciting mystery begins for Frank and Joe Hardy when they help a stranger who has had an accident with his car.

  26. The Phantom Freighter 1947 length not known

  27. The Secret of Skull Mountain 1948 3.3 h

    There is a crisis in Bayport!

  28. The Sign of the Crooked Arrow 1949 2.9 h

    With only the slender clue of an arrow-shaped tie clasp, Frank and Joe Hardy pick up the trail of the cunning gang of thieves responsible for a wave of jewelry-store holdups.

  29. The Secret of the Lost Tunnel 1950 3.2 h

    Difficult assignments are nothing new to the Hardy boys, and this one that takes them to the deep South is particularly challenging.

  30. The Wailing Siren Mystery 1951 3.3 h

    Caught in their motorboat the Sleuth by a sudden storm at sea, Frank and Joe Hardy are helpless when the engine conks out.

  31. The Secret of Wildcat Swamp 1952 3.3 h

    An archaeological expedition in the West turns into a desperate attempt to capture robbers and an escaped convict.

  32. The Crisscross Shadow 1953 3.1 h

    When a man selling leather goods door-to-door steals the key to their detective father's file cabinet, Frank and Joe Hardy set out to track him down.

  33. 34

    The Hooded Hawk Mystery 1954 2.9 h

    A trained peregrine falcon that the young detectives receive as a gift involves them in an exciting mystery.

  34. The Yellow Feather Mystery 1954 3.4 h

    In trying to trace a missing will, detectives Frank and Joe Hardy trap a dangerous criminal who is willing to risk all--including murder--for money.

  35. The Clue in the Embers 1956 length not known

  36. The Secret of Pirates' Hill 1957 3.3 h

    In a series of hair-raising adventures both on land and undersea, the teen-age brother detectives pit their wits against some of the most ruthless criminals they have ever…

  37. The Hardy Boys Detective Handbook 1959 length not known

  38. The Mystery at Devil's Paw 1959 length not known

  39. Mystery of the Desert Giant 1960 length not known

  40. The Clue of the Screeching Owl 1962 2.9 h

    For cliffhanging suspense and thrilling action read THE HARDY BOYS MYSTERY STORIES- featuring the thrilling adventures of America's favorite detective duo, Frank and Joe Hardy.

  41. The Viking Symbol Mystery 1962 3.2 h

    The Canadian Northwest beckons Frank and Joe Hardy to mystery and adventure.

  42. The Mystery of the Aztec Warrior 1964 3.1 h

    The handwritten will of the deceased world-traveler is strange and mysterious.

  43. The Haunted Fort 1965 length not known

  44. The Mystery of the Spiral Bridge 1966 2.9 h

    Frank and Joe Hardy are determined to bring to justice the vicious criminals who kidnapped their detective father while he was investigating sabotage of a road-building project in…

  45. The Secret Agent on Flight 101 1967 2.9 h

    Rarely do magicians reveal their professional secrets.

  46. Mystery of the Whale Tattoo 1968 length not known

  47. The Arctic Patrol Mystery 1969 length not known

  48. The Bombay Boomerang 1970 length not known

  49. Danger on Vampire Trail 1971 2.9 h

    An assignment from their famous detective father to track down a ring of credit-card counterfeiters takes Frank and Joe Hardy on an exciting camping trip to the Rocky Mountains.

  50. The Masked Monkey 1972 length not known

  51. The Shattered Helmet 1973 2.9 h

    Danger is the name of the game when the Hardys agree to help their pen pal from Greece, Evan Pandropolos, search for a priceless, ancient Greek helmet.

  52. The Clue of the Hissing Serpent 1974 2.9 h

    Why is a wealthy sportsman so frightened by the serpent design on a mysterious balloon that he begs Frank and Joe Hardy to protect him?

  53. The Mysterious Caravan 1975 2.9 h

    When the Hardy Boys take a winter vacation in Jamaica, Joe finds an ancient bronze death mask washed up near their beach house during a violent storm.

  54. The Witchmaster's Key 1976 3.3 h

    There is no time for explanations when Mr. Hardy telephones Frank and Joe from the West Coast and sends them flying off to England to help his old friend Professor Rowbotham.

  55. The Jungle Pyramid 1977 3.1 h

    Gold bullion -- a million dollars worth -- has been stolen from the Wakefield Mint under strange circumstances.

  56. The Firebird Rocket 1978 length not known

  57. 59

    Night of the Werewolf 1979 3.3 h

    The treasure that captured a nation's imagination Everyone's favorite farmgirl, Dorothy from Kansas, finds herself on a strange odyssey with three new friends.

  58. Mystery of the Samurai Sword 1979 length not known

  59. The Sting of the Scorpion 1979 2.9 h

    During Mr. Hardy's investigation of a ruthless gang of terrorists, Frank and Joe witness an explosion in the sky near an airborne dirigible owned by Quinn Air Fleet.

  60. 61

    The Pentagon Spy 1980 3.3 h

    Valuable antique weathervanes are being stolen in the Pennsylvania Dutch country.

  61. 63

    The Mummy Case 1980 3.3 h

    When five Egyptian statuettes are stolen from a museum, the Hardy Boys travel to exotic Egypt.

  62. Mystery of Smugglers Cove 1980 length not known

  63. The Apeman's Secret 1980 length not known

  64. The Four-Headed Dragon 1981 3.3 h

    The Hardy boys track a criminal who plans to use an invention designed as a peaceful aid to the secret Four-Headed Dragon organization behind the Iron Curtain to harm the free…

  65. The Infinity Clue 1981 3.5 h

    The Hardy Boys solve mysteries related to a gang of terrorists and a stolen diamond.

  66. The Outlaw's Silver 1981 length not known

  67. The Stone Idol 1981 3.3 h

    First valuable antique weather vanes are stolen in Pennsylvania Dutch Country and Frank and Joe are hired to catch the thieves.

  68. The Submarine Caper 1981 3.4 h

    On a visit to Germany the Hardy brothers investigate the theft of plans for a newly invented submarine and the mysterious disappearance of valuable coins and paintings.

  69. The Vanishing Thieves 1981 length not known

  70. Game Plan for Disaster 1982 3.8 h

    Frank and Joe Hardy are drawn into a tangled web of danger when they are called in to investigate mysterious accidents plaguing a college football star.

  71. The Billion Dollar Ransom 1982 3.5 h

    The Hardy boys help out when a magicians' tournament is threatened by mysterious happenings.

  72. The Voodoo Plot 1982 3.5 h

    While in New Orleans during Mardi Gras, the two young sleuths try to track down the perpetrators of a rash of burglaries.

  73. Tic-Tac-Terror 1982 3.8 h

    The two young detectives solve a mystery involving a top secret government agency and a world-famous spy who wishes to defect to America.

  74. Track of the Zombie 1982 length not known

  75. Trapped at Sea 1982 length not known

  76. The Crimson Flame 1983 length not known

  77. The Skyfire Puzzle 1985 length not known

  78. Cult of Crime 1987 2.8 h

    In trying to free their friend Holly from the clutches of a murderous mountain cult, the Hardy Boys find that the lunatic Rajah and his followers have spread to their own home…

  79. Dead on Target 1987 2.8 h

    The Hardy Boys tangle with an international terrorist killer and a secret government agency called the Network.

  80. Evil, Inc. 1987 2.8 h

    The Hardy Boys find themselves on their own in France, fighting the largest organized crime ring in the world.

  81. Cast of Criminals 1989 length not known

  82. Running on Empty 1990 length not known

  83. The Last Laugh 1990 1.5 h

    During a San Diego comic convention, famed comic book publisher Barry Johns is kidnapped--and the Hardys see it all!

  84. Fear on Wheels 1991 length not known

  85. Crime in the Kennel 1995 2.7 h

    The Hardy Boys discover that dogs are disappearing all over Bayport so their investigation begins to find the guilty ones.

  86. Cross-Country Crime 1995 length not known

  87. The Search for the Snow Leopard 1996 2.9 h

    The hunt is on...and the Hardy Boys could end up being dead meat!

  88. River Rats 1997 length not known

  89. Eye on Crime 1998 length not known

  90. A Will to Survive 1999 length not known

  91. The Caribbean Cruise Caper 1999 length not known

  92. The Hunt for the Four Brothers 1999 length not known

  93. A Game Called Chaos 2000 length not known

  94. Daredevils 2000 length not known

  95. Skin & Bones 2000 length not known

  96. The End of the Trail 2000 length not known

  97. Training for Trouble 2000 length not known

  98. Crime in the Cards 2001 length not known

  99. Past and Present Danger 2001 length not known

  100. The Castle Conundrum 2001 length not known

  101. Trouble Times Two 2001 length not known

  102. Passport to Danger 2003 length not known

  103. The Dangerous Transmission 2004 length not known

  104. Warehouse Rumble 2004 length not known

  105. Murder House 2008 2.9 h

    ATAC Briefing for Agents Frank and Joe Hardy MISSION: To finally get to the bottom of the ongoing deadly scares taking place on the set of the reality TV show Deprivation House.

How much is left

After book 1, The Tower Treasure about 200 hours left, not counting 43 books of unknown length
After book 2, The House on the Cliff about 197 hours left, not counting 43 books of unknown length
After The Secret of the Old Mill about 194 hours left, not counting 43 books of unknown length
After book 5, The Missing Chums about 190 hours left, not counting 43 books of unknown length
After book 6, The Shore Road Mystery about 187 hours left, not counting 43 books of unknown length
After Hunting for Hidden Gold about 184 hours left, not counting 43 books of unknown length
After book 7, The Secret of the Caves about 180 hours left, not counting 43 books of unknown length
After book 8, The Mystery of Cabin Island about 177 hours left, not counting 43 books of unknown length
After book 9, The Great Airport Mystery about 173 hours left, not counting 43 books of unknown length
After What Happened at Midnight about 170 hours left, not counting 43 books of unknown length
After While the Clock Ticked about 167 hours left, not counting 43 books of unknown length
After book 12, Footprints under the Window about 164 hours left, not counting 43 books of unknown length
After The Mark on the Door about 161 hours left, not counting 43 books of unknown length
After The Hidden Harbor Mystery about 161 hours left, not counting 42 books of unknown length
After book 15, The Sinister Signpost about 157 hours left, not counting 42 books of unknown length
After A Figure in Hiding about 154 hours left, not counting 42 books of unknown length
After The Secret Warning about 154 hours left, not counting 41 books of unknown length
After The Twisted Claw about 150 hours left, not counting 41 books of unknown length
After The Disappearing Floor about 147 hours left, not counting 41 books of unknown length
After The Mystery of the Flying Express about 144 hours left, not counting 41 books of unknown length
After The Clue of the Broken Blade about 141 hours left, not counting 41 books of unknown length
After The Flickering Torch Mystery about 137 hours left, not counting 41 books of unknown length
After The Melted Coins about 134 hours left, not counting 41 books of unknown length
After The Short-Wave Mystery about 131 hours left, not counting 41 books of unknown length
After The Secret Panel about 127 hours left, not counting 41 books of unknown length
After The Phantom Freighter about 127 hours left, not counting 40 books of unknown length
After The Secret of Skull Mountain about 124 hours left, not counting 40 books of unknown length
After The Sign of the Crooked Arrow about 121 hours left, not counting 40 books of unknown length
After The Secret of the Lost Tunnel about 118 hours left, not counting 40 books of unknown length
After The Wailing Siren Mystery about 114 hours left, not counting 40 books of unknown length
After The Secret of Wildcat Swamp about 111 hours left, not counting 40 books of unknown length
After The Crisscross Shadow about 108 hours left, not counting 40 books of unknown length
After book 34, The Hooded Hawk Mystery about 105 hours left, not counting 40 books of unknown length
After The Yellow Feather Mystery about 102 hours left, not counting 40 books of unknown length
After The Clue in the Embers about 102 hours left, not counting 39 books of unknown length
After The Secret of Pirates' Hill about 98 hours left, not counting 39 books of unknown length
After The Ghost at Skeleton Rock about 95 hours left, not counting 39 books of unknown length
After The Hardy Boys Detective Handbook about 95 hours left, not counting 38 books of unknown length
After The Mystery at Devil's Paw about 95 hours left, not counting 37 books of unknown length
After The Mystery of the Chinese Junk about 92 hours left, not counting 37 books of unknown length
After Mystery of the Desert Giant about 92 hours left, not counting 36 books of unknown length
After The Clue of the Screeching Owl about 90 hours left, not counting 36 books of unknown length
After The Viking Symbol Mystery about 86 hours left, not counting 36 books of unknown length
After The Mystery of the Aztec Warrior about 83 hours left, not counting 36 books of unknown length
After The Haunted Fort about 83 hours left, not counting 35 books of unknown length
After The Mystery of the Spiral Bridge about 80 hours left, not counting 35 books of unknown length
After The Secret Agent on Flight 101 about 77 hours left, not counting 35 books of unknown length
After Mystery of the Whale Tattoo about 77 hours left, not counting 34 books of unknown length
After The Arctic Patrol Mystery about 77 hours left, not counting 33 books of unknown length
After The Bombay Boomerang about 77 hours left, not counting 32 books of unknown length
After Danger on Vampire Trail about 74 hours left, not counting 32 books of unknown length
After The Masked Monkey about 74 hours left, not counting 31 books of unknown length
After The Shattered Helmet about 72 hours left, not counting 31 books of unknown length
After The Clue of the Hissing Serpent about 69 hours left, not counting 31 books of unknown length
After The Mysterious Caravan about 66 hours left, not counting 31 books of unknown length
After The Witchmaster's Key about 62 hours left, not counting 31 books of unknown length
After The Jungle Pyramid about 59 hours left, not counting 31 books of unknown length
After The Firebird Rocket about 59 hours left, not counting 30 books of unknown length
After book 59, Night of the Werewolf about 56 hours left, not counting 30 books of unknown length
After Mystery of the Samurai Sword about 56 hours left, not counting 29 books of unknown length
After The Sting of the Scorpion about 53 hours left, not counting 29 books of unknown length
After book 61, The Pentagon Spy about 50 hours left, not counting 29 books of unknown length
After book 63, The Mummy Case about 46 hours left, not counting 29 books of unknown length
After Mystery of Smugglers Cove about 46 hours left, not counting 28 books of unknown length
After The Apeman's Secret about 46 hours left, not counting 27 books of unknown length
After The Four-Headed Dragon about 43 hours left, not counting 27 books of unknown length
After The Infinity Clue about 40 hours left, not counting 27 books of unknown length
After The Outlaw's Silver about 40 hours left, not counting 26 books of unknown length
After The Stone Idol about 36 hours left, not counting 26 books of unknown length
After The Submarine Caper about 33 hours left, not counting 26 books of unknown length
After The Vanishing Thieves about 33 hours left, not counting 25 books of unknown length
After Game Plan for Disaster about 29 hours left, not counting 25 books of unknown length
After The Billion Dollar Ransom about 26 hours left, not counting 25 books of unknown length
After The Voodoo Plot about 22 hours left, not counting 25 books of unknown length
After Tic-Tac-Terror about 18 hours left, not counting 25 books of unknown length
After Track of the Zombie about 18 hours left, not counting 24 books of unknown length
After Trapped at Sea about 18 hours left, not counting 23 books of unknown length
After The Crimson Flame about 18 hours left, not counting 22 books of unknown length
After The Skyfire Puzzle about 18 hours left, not counting 21 books of unknown length
After Cult of Crime about 16 hours left, not counting 21 books of unknown length
After Dead on Target about 13 hours left, not counting 21 books of unknown length
After Evil, Inc. about 10 hours left, not counting 21 books of unknown length
After Cast of Criminals about 10 hours left, not counting 20 books of unknown length
After Running on Empty about 10 hours left, not counting 19 books of unknown length
After The Last Laugh about 9 hours left, not counting 19 books of unknown length
After Fear on Wheels about 9 hours left, not counting 18 books of unknown length
After Crime in the Kennel about 6 hours left, not counting 18 books of unknown length
After Cross-Country Crime about 6 hours left, not counting 17 books of unknown length
After The Search for the Snow Leopard about 3 hours left, not counting 17 books of unknown length
After River Rats about 3 hours left, not counting 16 books of unknown length
After Eye on Crime about 3 hours left, not counting 15 books of unknown length
After A Will to Survive about 3 hours left, not counting 14 books of unknown length
After The Caribbean Cruise Caper about 3 hours left, not counting 13 books of unknown length
After The Hunt for the Four Brothers about 3 hours left, not counting 12 books of unknown length
After A Game Called Chaos about 3 hours left, not counting 11 books of unknown length
After Daredevils about 3 hours left, not counting 10 books of unknown length
After Skin & Bones about 3 hours left, not counting 9 books of unknown length
After The End of the Trail about 3 hours left, not counting 8 books of unknown length
After Training for Trouble about 3 hours left, not counting 7 books of unknown length
After Crime in the Cards about 3 hours left, not counting 6 books of unknown length
After Past and Present Danger about 3 hours left, not counting 5 books of unknown length
After The Castle Conundrum about 3 hours left, not counting 4 books of unknown length
After Trouble Times Two about 3 hours left, not counting 3 books of unknown length
After Passport to Danger about 3 hours left, not counting 2 books of unknown length
After The Dangerous Transmission about 3 hours left, not counting 1 book of unknown length
After Warehouse Rumble about 3 hours left

Reading the whole series

About 203 hours 33 minutes

64 of 107 books, 11,103 pages. Estimated at 250 words a minute.

408 days (about 59 weeks) at 30 minutes a day

Estimate based on 275 words per page.