In this crime drama, Richard Attenborough plays the Scotland Yard police officer whose job it is to make sure visiting American cop John Wayne plays things by the book. It's essentially a western transported to London, with red double-deckers instead of stagecoaches and hangovers from swinging London. It's also a blatant rip-off of Clint Eastwood's Coogan's Bluff and Dirty Harry, which Wayne bitterly regretted turning down after seeing the film. But Wayne's ten-gallon charisma carries the movie and Attenborough looks fairly gobsmacked by acting with such a living legend.

A hard-nosed Chicago cop is sent to London to bring back an American mobster being held for extradition. Brannigan in his Irish-American way brings American law to the people of Scotland Yard but has to contend with a stuffy old London first.