- George Pravda - Kaldor
- Richard Heffer - Gregor
- Tenniel Evans - Linton
- Jean Anderson - Penelope Blanshard
- Patrick Allen - Morgan
- David Prowse - Bodyguard
- Noel Johnson - Melton
- Brian Oulton - Harrison
- Desmond Llewelyn - Barrett
- Elaine Ives-Cameron - Russian Woman
- Norman Shelley - Charles
- Vernon Dobtcheff - Herman Voss
- John Savident - Largo
- Roy Boyd - Anton
- Hildegard Neil - Zeta Baker
- George Roderick - Security Officer
- John Woodnutt - Colonel Field
- Richard Hurndall - Arturo
- Barry Dennen - Kirby
- Tom Watson - Plumper
- Roger Delgado - Rogov
- Terence Alexander - Thorens
- Geoffrey Toone - Karl Dickinson
- Derek Francis - Vaslva Baroviev
- Bill Treacher - Taxi Driver
- John Bailey - Bailey
- Maureen Lipman - Lisa
- John Welsh - Mallory
- Hans Meyer - General Hovaths
- Olaf Pooley - Istov
- Maria Aitken - Mrs. Petrie
- Andrew Sachs - Stein
- Geoffrey Bayldon - Blair
- David Simeon - Desk Clerk
- Tony Caunter - Mullins
- Gary Watson - Tellor
- Tony Wright - Samford
- Burnell Tucker - U.S. Sergeant
- Kate O'Mara - Helen Lingard
- Peter Graham Scott
- Viktors Ritelis
- David Sullivan Proudfoot
- Gerard Glaister
- Tony Williamson
- David T. Chantler
- Mervyn Haisman
- Henry Lincoln
Vernon Dobtcheff hace el papel de Herman Voss.
Alexandra Bastedo interpreta a Diana Dalzell en la serie.
Clifford Evans hace el papel de Sir Iain Dalzell.
Anthony Valentine interpreta a Philip West en la serie.
Brian Peck interpreta a Culliford en la serie.
Capítulo disponible en las siguientes plataformas:
