An experiment gone awry places a neurologist and a homicide detective in a psychopath's nightmarish world.
| Actor | Role |
|---|---|
 Craig FairbrassTerry Hamilton | Terry Hamilton |
 Elizabeth HurleyStephanie Lyell | Stephanie Lyell |
 Keith AllenGilmour | Gilmour |
 Anita DobsonJudith | Judith |
 Jesse BirdsallScott | Scott |
 Craig KellyMatthew Hamilton | Matthew Hamilton |
 Faith KentMiss Coope | Miss Coope |
 Georgina HaleSister Romulus | Sister Romulus |
 Samantha SpiroWPC Foster | WPC Foster |
 Steven BrandTurnbull | Turnbull |
| ZZoe HeyesJosie | Josie |
 Annette BadlandNurse Wrekin | Nurse Wrekin |
| NNatasha HumphreyGloria | Gloria |
| JJack McKenzieDCI Clery | DCI Clery |
 Christopher AdamsonWeasel | Weasel |
| SShaun EthertonRookie Cop | Rookie Cop |
| AAndrew RattenburyFireman | Fireman |
| CCarl ProctorForensic | Forensic |
 Che WalkerPoliceman | Policeman |
 Lucinda ClareEmily Stanton | Emily Stanton |
 Alastair G. CummingPeter Stanton | Peter Stanton |
| JJim GroomGeoff | Geoff |
| RRod WoodruffRiot Cop | Riot Cop |
 Paul BrooksRiot Cop | Riot Cop |
| CCleve WestRiot Cop | Riot Cop |
| MMark BakerRiot Cop | Riot Cop |