In the charming German town of Lüneburg, a wave of brutal child murders disrupts the peaceful surface, revealing a horrifying secret hidden since World War II. Former homicide detective Ruth Marx, still tormented by her daughter's disappearance, is pulled back into the darkness she believed she had escaped. As the body count rises and panic spreads through the town, Ruth's investigation leads her down a twisted path of occult symbols, Nazi experiments, and unimaginable betrayals. With each clue, she draws closer to a chilling truth: a covert project aimed at creating unstoppable werewolf super-soldiers. Teaming up with her skeptical new partner and a mysterious wise woman, Ruth races against time to save the town's children and preserve her own humanity. Will she succumb to the beast within? 'The Mark' is a gripping supernatural thriller that will keep you on the edge of your seat.