Instinct (previously published as Murder Games)

In this thrilling story from the world’s #1 bestselling author, a criminal behavior expert must team up with an NYPD detective to track down a deadly killer terrorizing New York City—before it’s too late.

Dr. Dylan Reinhart wrote the book on criminal behavior. Literally: he's a renowned, bestselling Ivy League expert on the subject. When a copy of his book turns up at a gruesome murder scene—along with a threatening message from the killer—it looks like someone has been taking notes.

Elizab...