Books like The Hardy Boys Detective Handbook
Carolyn Keene
The Hardy Boys Detective Handbook is 231 pages, about 4 hours 14 minutes at 250 words a minute.
12 books to read next
How long each takes
Detective Science 2.2 h 
The Naturals 5.3 h 
All In 6.9 h 
Bad Blood 7.0 h 
Nate the Great Goes Undercover 52 min 
Shouldn't You Be in School? 6.1 h 
The Body in the Woods 5.1 h 
When 6.1 h 
The Rag and Bone Shop 2.8 h 
A Matter of Choice 4.7 h 
Mad House 1.8 h 
High Stakes 4.1 h Bar height shows length. Estimated at 250 words a minute.