Gabriel Kensington and his wife Lydia have been brutally slain in their luxurious home in New Mexico. A frantic, whispered phone call from their teenage daughter Addis, and her best friend Emerson, quickly alerts the authorities to the killings. But when Detective Alyssa Wyatt and the squad appear at the house, the unthinkable has happened. The girls are nowhere to be found...and neither is the killer.