First broadcast 7th September 1980.
After two hired guns have been shot following a hostage situation CI5 discovers that they rang the Apex arms factory and that Apex employee John Copeland is being blackmailed into copying plans for a new tank and handing them over to a group of East German agents.
Gordon Jackson - George Cowley
Martin Shaw - Doyle
Lewis Collins - Bodie
Michael Craig - Guthrie
Ronald Hines - Copeland
Lynda La Plante - Viv Copeland (as Lynda Marchal)
Ian Redford - Lucas
Alun Lewis - McCabe
Oona Kirsch - Sandy Copeland
Kate Dorning - Nancy
John Michael McCarthy - Insp. Grainger
Nigel Humphreys - Joe
Stewart Harwood - Sam
Gennie Nevinson - Eva
Sean Chapman - Coleman
Alan Igbon - Angadi
Christopher Saul - Male Hostage
Jennifer Granville - Female Hostage
Becci Hunt - Child
John Joyce - Langton
Hilary Crane - Miss Kendall
Sue Nicholls - Mrs. Derinda Forbes
Charles Pemberton - Styles
Patricia Marks - Landlady
Eddie Powell - Driver
