An American agent and a Scotland Yard detective join forces on an undercover operation to infiltrate and apprehend a counterfeiting gang. Crime thriller, starring Yul Brynner, Charles Gray, Graham Crowden and the late Edward Woodward.

U.S. Secret Service agent Peter Novak goes undercover with Scotland Yard officer Thompson to halt a murderous gang of counterfeiters known as the Golden Goose. Although Peter is unsure about John's loyalties, the two infiltrate the gang and win the trust of thug Nick "The Owl" Harrison before enduring a series of double-crosses.