While investigating a murder case, a detective stumbles upon a rare-stamp swindle involving the victim's twin sister.
James Booth
as Matthews
Francesca Annis
as Delphi / Diane
Nicky Henson
as Roger
Joss Ackland
as Jones
Richard Heffer
as Claude
Sue Lloyd
as Model
Joseph O'Conor
as Blachford
Una Stubbs
as Anna
George Murcell
as Doctor Merrick
Marianne Stone
as Mrs. Parsons
Penelope Keith
as Miss. Hartridge
John Savident
as Sir Robert Hampton
