Now a hit TV series, Instinct __________________________ Part one of a gripping five-part murder mystery from bestselling thriller writer James Patterson. A wealthy hedge fund manager is brutally murdered on the doorstep of his Upper East Side town house in Manhattan. Elizabeth Needham, the tenacious cop in charge of the case, turns to an unlikely ally – Dylan Reinhart, a brilliant professor whose book turned up in connection with the murder. Along with the book was one other clue: a single playing card. When another dead body and another playing card are found, Elizabeth and Dylan's worst fears are confirmed. They're hunting for a serial killer.