Cuckoo is a 2024 German-American horror film directed by Tilman Singer from a screenplay by Tilman Singer. The film premiered in Germany on July 18, 2024.
Reluctantly, 17-year-old Gretchen (Hunter Schaefer) leaves his American home to live with his father, who has just moved to a resort in the German Alps with his new family. Arriving at their future residence, they are greeted by Mr. König (Dan Stevens), her father's boss, who takes an inexplicable interest in Gretchen's mute half-sister, Alma.
But something seems amiss in this peaceful vacation paradise. Gretchen is tormented by strange noises and bloody visions until she discovers a shocking secret that affects her own family.
