Books like The Satan-seller
Mike Warnke
The Satan-seller is 214 pages, about 3 hours 55 minutes at 250 words a minute.
7 books to read next
How long each takes
Satan Is Alive and Well on Planet Earth 4.7 h 
The New Birth 6.5 h 
Satan, Satanism, and Witchcraft 2.3 h 
Repetition 3.4 h 
Christian Mission in the Modern World 2.4 h 
An Alarm to Unconverted Sinners, in a Serious Treatise 3.5 h 
Peace of Soul 5.4 h Bar height shows length. Estimated at 250 words a minute.