Nightwalker(2009)

Heather Graham

One night, desperate for money to support her grandfather, Jessy Sparhawk places the bet that will change her life forever. Just as she's collecting her winnings, a man stumbles through the crowd, a knife protruding from his back, and crashes into her, pinning her to the table.

Hired to investigate the murder, private detective Dillon Wolf finds himself fascinated by the gorgeous redhead who'd been trapped beneath the victim—and by the single word the dying man had whispered in her ear. Indigo.

One murder leads to another as Dillon and Jessy realize that the nightmare is only just beginning—and that the dead still have a hand left to play.