An ambitious young executive is sent to retrieve his company's CEO from an idyllic but mysterious "wellness center" at a remote location in the Swiss Alps but soon suspects that the spa's miraculous treatments are not what they seem.
| Actor | Role |
|---|---|
 Dane DeHaanLockhart | Lockhart |
 Jason IsaacsVolmer | Volmer |
 Mia GothHannah | Hannah |
 Harry GroenerPembroke | Pembroke |
 Celia ImrieVictoria Watkins | Victoria Watkins |
 Adrian SchillerDeputy Director | Deputy Director |
 Ivo NandiEnrico | Enrico |
 Tomas NorströmFrank Hill | Frank Hill |
| AAshok MandannaRon Nair | Ron Nair |
 Lisa BanesHollis | Hollis |
 David BishinsHank Green | Hank Green |
 Carl LumblyMr. Wilson | Mr. Wilson |
 Magnus KrepperPieter the Vet | Pieter the Vet |
 Peter BenedictConstable | Constable |
 Michael MendlBartender | Bartender |
 Maggie SteedMrs. Abramov | Mrs. Abramov |
 Craig WroeMorris | Morris |
 Tom FlynnHumphrey | Humphrey |
 Eric ToddJosh | Josh |
 Jason BabinskyCarl | Carl |
 Johannes KrischCaretaker | Caretaker |
 Rebecca StreetLockhart's Mother | Lockhart's Mother |
 Jeff BurrellFuneral Director | Funeral Director |
 Bert TischendorfLockhart's Father | Lockhart's Father |
| DDouglas Hamilton9-Year-Old Lockhart | 9-Year-Old Lockhart |
 Leonard KunzFrank | Frank |
 Daniel MichelDenim | Denim |
 Natascha LawiszusBar Girl | Bar Girl |
 Luzie ScheuritzelBar Girl | Bar Girl |
 Manon KahleSecretary | Secretary |