The Day of the Dead – El Dia de los Muertos – when Mexico celebrates its lost loved ones. But for disgraced newspaper reporter, Nick Vargas, and attorney, Beth Crawford, it is not an occasion to celebrate. Nick, now a true crime writer, is determined to find the truth behind the slaughter of nuns in a deserted house in the desert and Beth is desperate to find her younger sister, Jen, who disappeared without trace when they were on holiday in Mexico. Their quest for the truth leads them to a small town in Mexico where a mysterious and malevolent cult are known to perform sinister and deadly rituals. Danger lurks as Beth and Nick know they are being watched, and that their enemy is waiting for the right moment to strike . . .