Books like Crisis of Conscience
Raymond Franz
Crisis of Conscience is 438 pages, about 8 hours 2 minutes at 250 words a minute.
6 books to read next
How long each takes
'Let Your Name Be Sanctified' 7.0 h 
Mankind's Search for God 7.0 h 
Apocalypse Delayed 7.9 h 
You Can Live Forever in Paradise on Earth. 4.7 h 
The Four Major Cults 8.2 h 
The Truth That Leads to Eternal Life 3.5 h Bar height shows length. Estimated at 250 words a minute.