The File of the Golden Goose

The File of the Golden Goose is a 1969 British thriller film directed by Sam Wanamaker and starring Yul Brynner, Charles Gray and Edward Woodward. Its plot involves an American detective being sent to Britain to track down a major international criminal.

A trail of counterfeit hundred dollar bills has been discovered in several places around the world. When this comes to the attention of the Secret Service, they assign one of their top men, Pete Novak Yul Brynner, to the case of finding out who is producing and distributing them.Pete realizes that this is an assignment that demands his full attention, so he immediately breaks up with his girlfriend in preparation for the journey he must take. Before Pete can even begin his search, he is ambushed by a gang of hoodlums trying to shoot him down as they drive by outside his home. He concludes that the gang must have been tipped off by someone on the inside of the service about his new assignment. He manages to kill them, but discovers afterwards that the killers has accidentally shot and killed his exgirlfriend in the process. ........

Source: Wikipedia