Books like Campaign of Crime
Carolyn Keene
Campaign of Crime is 154 pages, about 2 hours 49 minutes at 250 words a minute.
9 books to read next
How long each takes
Innocent in Death 7.3 h 
Seduction in Death 6.6 h 
Triple Zeck 9.2 h 
The Norths Meet Murder 5.7 h 
Widows 6.0 h 
Death Takes a Bow 4.7 h 
Kiss 6.8 h 
When the Sacred Ginmill Closes 4.8 h 
Mischief 6.4 h Bar height shows length. Estimated at 250 words a minute.