First broadcast 15th December 1979.
Cowley appears to have stolen two canisters of a new nerve gas and is recorded trying to sell them to German Otto Hahn.
Gordon Jackson - George Cowley
Martin Shaw - Doyle
Lewis Collins - Bodie
David de Keyser - Otto Hahn
Glynn Edwards - Alfred Cole
Ina Skriver - Jutta (as Christina World)
John Savident - Robert Plumb
Dennis Burgess - Dr. Forbes
Tony Scannell - Man 1
James Lister - Karl
Kenneth Owens - Groves
Will Stampe - Ted
Frank Ellis - Man 2
Michael Ryan - Wilf (as Ryan Michael)
Pat Gorman - CI5 Agent
