Fiction

That sounds intense. About a a depraved stalker who carefully targeted Karen and slowly, methodically, exploited her every weakness, stripped away all that mattered to her, and then watched her self-destruct. Now, as investigators begin a psychological battle against a master sadist the law can't touch, they discover he's starting to learn their weaknesses, their loves -- and he's determined to tear their world apart.

Sandford has SO many series to choose from. So far the Prey series has 27 books and Virgil Flowers, 10. Decisions, decisions.