The Executioner

John Shay

Sarah Booth

Racovsky

Vaughan Jones

Colonel Scott

Adam Booth

Philip Crawford

Prof. Parker

Butterfield

Roper

Balkov

Anna

Shay Cell Group Surrvior

Poilce Inspector (uncredited)

Joan Collins is said to have hated working with George Peppard.

One of a number of espionage movies that actor Charles Gray made around the mid-late 60s and early 70s. The others were Masquerade (1965), You Only Live Twice (1967) , The Man Outside (1967), Diamonds Are Forever (1971), The File of the Golden Goose (1969) and When Eight Bells Toll (1971),

Actor George Peppard received sole name-above-the title billing.

At the start of the film one of the dead victims lying by the empty swimming pool is startled and moves when the car explodes, with his head and arm moving.

John Shay: I thought you guys used Pentothal.