

After a wild bachelorette party, a group of young women find themselves trapped in an underground bunker complex. A disturbing finding turns their night into an absolute nightmare. Will they be able to escape from this vast concrete maze?
Practical Effects
James Swanton's demon creature design is genuinely unsettling
Cinematography
Cramped bunker spaces weaponized for maximum dread
Director
Lars Janssen
Trivia, insights & behind the scenes
Shot on Guernsey in the Channel Islands, using actual WWII German bunker complexes — the real locations add oppressive authenticity no set could replicate.
James Swanton also designed the demon practically; he's primarily known as a stage performer and puppeteer, making his physical performance genuinely inhuman.