Paul and Kim meet when their vehicles collide. Paul is fascinated with the attractive Kim. It turns out that the two were childhood friends in Catholic boys' school, but back then, before the operation, Kim was named Karl.
| Actor | Role |
|---|---|
 Rupert GravesPaul Prentice | Paul Prentice |
 Steven MackintoshKarl / Kim Foyle | Karl / Kim Foyle |
 Miriam MargolyesPamela | Pamela |
 Charlotte ColemanAlison | Alison |
 Saskia ReevesJean | Jean |
 Nisha NayarAngela | Angela |
 Neil DudgeonNeil Payne | Neil Payne |
 Adrian RawlinsMike | Mike |
 Robert PughCID Detective | CID Detective |
 Kevin AllenPoliceman | Policeman |
 Gerard HoranPolice Sergeant | Police Sergeant |
 Phil DavisCabbie | Cabbie |
 Ian DuryBailiff | Bailiff |
| Robert PughDS Cole | DS Cole |
| Kevin AllenPC Alan | PC Alan |
 Rick WardenPC Ken | PC Ken |
 Edward Tudor-PoleProsecuting Solicitor | Prosecuting Solicitor |
 Lia WilliamsDefending Solicitor | Defending Solicitor |
 Blake RitsonYoung Prentice | Young Prentice |
| SStephen WalkerYoung Karl | Young Karl |
 Graham FellowsDispatch Manager | Dispatch Manager |
 Peter-Hugo DalyBarry | Barry |
 ShendJim | Jim |
 Ruth SheenNosy neighbour | Nosy neighbour |
 Charles De'AthYoung Man at Gig | Young Man at Gig |
 Llewella GideonReceptionist | Receptionist |
 Robert DemegerMagistrate | Magistrate |
 Malcolm ShieldsSoldier | Soldier |
| JJames D. WhiteFiner | Finer |
| CColin RidgewellShrimp | Shrimp |