After reluctantly moving to the German Alps with her father and his new family, Gretchen discovers that their new town hides sinister secrets, as she's plagued by strange noises and frightening visions of a woman pursuing her.
When a singer is found murdered, with her scent glands excised from her body, detectives probe a group of friends who attended boarding school with her.
Two sisters go diving at a beautiful, remote location. One of the sisters is struck by a rock, leaving her trapped 28 meters below. With dangerously low levels of oxygen and cold temperatures, it is up to her sister to fight for her life.
