Kate Rafter is back to home after a horrific incident in war-torn Iraq and the death of her mother. While packing up her mother's belongings she comes to believe there is something strange and terrifying happening in the house next door.
| Actor | Role |
|---|---|
 Jenny SeagroveKate Rafter | Kate Rafter |
 Anna FrielSally Rafter | Sally Rafter |
 Ben MilesPaul | Paul |
 David BradleyRay | Ray |
 Lovi PoeFrida | Frida |
 Melissa AdvaniNeighbour | Neighbour |
 Erin AinsworthYoung Kate | Young Kate |
| AAudrey AzuzuMegan | Megan |
| TTariq BahPC Marks | PC Marks |
| TTeddy BirkbyDavid | David |
 Abigail BoydWPC Manning | WPC Manning |
 Max BrownYoung Ray | Young Ray |
 Emily ButcherHannah | Hannah |
 Christopher ColquhounHarry | Harry |
 Francesca CorneyBeach Woman | Beach Woman |
 Surinder DuhraSolicitor | Solicitor |
| JJon Edgley-BondDennis | Dennis |
 Seosaimhin HennellyYoung Sally | Young Sally |
| AAnkido HussenNidal | Nidal |
 Olga KurylenkoDr. Shaw | Dr. Shaw |
 Charlotte MounterFlashback Gillian | Flashback Gillian |
| HHarriet PickavanceYoung Hannah | Young Hannah |
| EEdward ShawShadow Boy | Shadow Boy |
 Maggie SteedGillian Rafter | Gillian Rafter |
 Joe UsherJoe | Joe |
 Michael Watson-GrayMick | Mick |
| NNick DavisonMourner (uncredited) | Mourner (uncredited) |
| DDavid EvestaffCafe Customer (uncredited) | Cafe Customer (uncredited) |