This offbeat John Wayne vehicle casts the Duke as Detective Jim Brannigan, an Irish-American detective at large in London. After the requisite culture-clash routines, its down to business as Brannigan teams with Scotland Yard official Commander Swann (Richard Attenborough) to corral a crook who has absconded to England to avoid extradition. Judy Geeson costars as Jennifer Thatcher, a cute lady constable who spends most over her time fending off Brannigans inbred chauvinism. Brannigan was cowritten by Christopher Trumbo, the son of former blacklistee Dalton Trumbo. ~ Hal Erickson, All Movie Guide