Books like Undetected
Dee Henderson
Undetected is 480 pages, about 8 hours 48 minutes at 250 words a minute.
6 books to read next
How long each takes
The Measure of a Heart 4.1 h 
A Turn in the Road 7.3 h 
Christmas Letters 4.9 h 
A Lady at Willowgrove Hall 6.4 h 
Discovering Women's History 3.9 h 
Doing Harm 7.3 h Bar height shows length. Estimated at 250 words a minute.