Reluctantly, 17-year-old Gretchen leaves her American home to live with her father, who has just moved into a resort in the German Alps with his new family. Arriving at their future residence, they are greeted by Mr. König, her father's boss, who takes an inexplicable interest in Gretchen's mute half-sister Alma. Something doesn't seem right in this tranquil vacation paradise. Gretchen is plagued by strange noises and bloody visions until she discovers a shocking secret that also concerns her own family.

"An oblique hybrid of creature feature, haunted hotel, dysfunctional family drama, and body horror. ... What holds everything together is exceptional direction, production design, and the tough yet vulnerable central performance from Hunter Schaefer."

Kurt Halfyard

ScreenAnarchy

"Cuckoo is a ride. You must be willing to give yourself over to it. If you prefer familiar plot beats and character tropes, this film will hit you in the face like a shovel."

Scott Phillips

Forbes