en CB01 OFFICIAL. Haunted by a deadly accident that claims the life of the child she anonymously gave up for adoption, grieving nurse Sharon cunningly infiltrates the life of survivor Cassie to become her caretaker, orchestrating a sadistic vengeful scheme against the negligent teens responsible for the tragedy. As the other survivors slowly perish around her, Cassie unravels Sharon’s secret connection to the deceased as well as her sinister intentions.