Books like The Three Faces of Eve
Corbett H. Thigpen
The Three Faces of Eve is 308 pages, about 5 hours 39 minutes at 250 words a minute.
7 books to read next
How long each takes
The Minds of Billy Milligan 8.2 h 
The Dissociation of a Personality 10.6 h 
My Life as a Dissociated Personality 1.1 h 
Sybil 8.2 h 
When Rabbit Howls 7.3 h 
MPD-Psycho 3.3 h 
First Person Plural 5.5 h Bar height shows length. Estimated at 250 words a minute.