Lockhart (Dane DeHaan) is a cocky young executive working for a New York financial services firm. The board summons him and explains that there are unsavoury business shenanigans afoot. The source is an ex-board member, Pembroke (Harry Groener), who recently went Awol at a “wellness” retreat in the Swiss Alps. Lockhart is tasked with going there and bringing Pembroke home, so the board can pin the illegal activity on him.
But when Lockhart reaches the retreat, he struggles to find answers – or, indeed, Pembroke. He tries to depart, but a car accident leaves him with a broken leg. He’s stuck in the old castle, with its secret history, its “vitamin”-quaffing patients, and its menacing overlord, Dr. Volmer (Jason Isaacs). Lockhart meets Hannah (Mia Goth), a