While investigating a murder case, a detective stumbles upon a rare-stamp swindle involving the victim's twin sister.
| Actor | Role |
|---|---|
 James BoothMatthews | Matthews |
 Francesca AnnisDelphi / Diane | Delphi / Diane |
 Nicky HensonRoger | Roger |
 Joss AcklandJones | Jones |
 Richard HefferClaude | Claude |
 Sue LloydModel | Model |
 Joseph O'ConorBlachford | Blachford |
 Una StubbsAnna | Anna |
 George MurcellDoctor Merrick | Doctor Merrick |
 Marianne StoneMrs. Parsons | Mrs. Parsons |
 Penelope KeithMiss. Hartridge | Miss. Hartridge |
 John SavidentSir Robert Hampton | Sir Robert Hampton |
 Clinton GreynVan Der Meij | Van Der Meij |
 Christian RodskaClerk | Clerk |
| MMarc ZuberHotel Receptionist | Hotel Receptionist |
| AAnthony NaylorRugby Player | Rugby Player |
 John Rhys-DaviesRugby Player | Rugby Player |
| RRodney CardiffDoctor | Doctor |
| SStephanie SmithDelphi / Diane as child | Delphi / Diane as child |
| PPeter SalmonMale Model | Male Model |
| MMichael BuchanMale Model | Male Model |
 Clifford EarlCID Man | CID Man |
| EEric KentCID Man | CID Man |
| JJosie GrantBarmaid | Barmaid |
 Guy StandevenMan in Street | Man in Street |