A sleep doctor tries to protect a family from a demon that feeds on people in their nightmares.
| Actor | Role |
|---|---|
 Maggie QAlice Arnolds | Alice Arnolds |
 Will KempTom Arnolds | Tom Arnolds |
 Sylvester McCoyAmado | Amado |
 Sam TroughtonCharlie Morgan | Charlie Morgan |
 Kristen BushSarah Morgan | Sarah Morgan |
 Adam LazarusNurse | Nurse |
 Susan FordhamMedic | Medic |
 Charlie BondAmerican Nurse | American Nurse |
| WWilliam Todd-JonesThe Night Hag | The Night Hag |
 William RheadLiam | Liam |
 Vincent AndrianoCam | Cam |
 Lindy PieriHospital Patient | Hospital Patient |
| MMinouche KaftelDoctor 2 | Doctor 2 |
 Emily NgNurse | Nurse |
 Neil LinpowDave Marklund | Dave Marklund |
 William HopeMalcolm | Malcolm |
 Honor KneafseyEmily Morgan | Emily Morgan |
 Okon Ubanga JonesMr. Futterman | Mr. Futterman |