Books like Dexter in the Dark
Jeff Lindsay
Dexter in the Dark is 320 pages, about 5 hours 52 minutes at 250 words a minute.
12 books to read next
How long each takes
Cold Blooded 8.5 h 
Mr. Mercedes 9.0 h 
The Perfect Husband 7.6 h 
The Caller 8.6 h 
My Sister, the Serial Killer 4.4 h 
Exquisite Corpse 4.6 h 
In the Miso Soup 3.3 h 
The Coffin Dancer 8.3 h 
Jack & Jill 7.9 h 
Kiss the Girls 8.5 h 
Scream for Me 8.2 h 
Violets Are Blue 7.2 h Bar height shows length. Estimated at 250 words a minute.