A young woman and her fiancé are in search of the perfect starter home. After following a mysterious real estate agent to a new housing development, the couple finds themselves trapped in a maze of identical houses and forced to raise an otherworldly child.
| Actor | Role |
|---|---|
 Imogen PootsGemma | Gemma |
 Jesse EisenbergTom | Tom |
 Senan JenningsYoung Boy | Young Boy |
 Éanna HardwickeOlder Boy | Older Boy |
 Jonathan ArisMartin | Martin |
| CCôme ThiryBaby | Baby |
 Molly McCannMolly | Molly |
 Danielle RyanSchool Mom | School Mom |
 Olga WehrlyCrying Woman | Crying Woman |
| FFionn LockettBoy at TV | Boy at TV |
| WWalter McCabeClapping Boy | Clapping Boy |
| TTerence McEneaneyHusband sex couple | Husband sex couple |
| SSarolta Charlotte SimoWife sex couple | Wife sex couple |
| SStephen MorrisonDead man in bath | Dead man in bath |
 Jack HudsonEstate Agent (uncredited) | Estate Agent (uncredited) |