This book reminds me of the movie starring Julia Roberts, "Sleeping with the enemy"

Putting the word psychopath on a books front cover can be quite the spoiler, although a huge part of the book is on its front cover, that still doesn't mean that we know everything. There could dozens of twists and turns on every page. On the cover we see a woman standing directly behind a man, indicating that the man is probably the psychopath because he's standing in front of his spouse.