Stopover Tokyo

Stopover Tokyo is a 1957 American espionage drama directed by Richard L. Breen and starring Robert Wagner, Joan Collins, Edmond OBrien and Ken Scott. Filmed in Japan in CinemaScope, the film is set in Tokyo and follows a US counterintelligence agent foiling a communist assassination plot.

US Intelligence Agent Mark Fannon Robert Wagner is sent to Tokyo on a routine courier mission but soon uncovers communist George Underwoods Edmond OBrien plot to assassinate the American High Commissioner Larry Keating.Whilst there he meets Welsh receptionist Joan Collins who fellow agent Tony Barrett Ken Scott has the hots for. Though this causes initial animosity between the two they manage to race against the clock to foil the assassination. ........

Source: Wikipedia