Requiem for a Secret Agent (1966)

Description

After the murder of an American secret agent by an international ring of assassins, the US foregoes sending another government agent but hires an amoral mercenary named Merrill to shut the organisation down. The Americans arrange for Merrill, nicknamed Bingo, to work with a Norwegian secret agent named Erik as a Norwegian national named Edith identifies Rubeck, the head of the assassination ring. The Norwegians want Rubeck taken to Oslo to stand trial for killing all the passengers aboard an airliner when Rubeck planted a bomb to kill one passenger. The Americans initially agree but want Merrill to capture and interrogate Rubeck for the details of his organisation.