Luis Denard (Boyer) a gentleman and pacifistic Spaniard has been dispatched by boat to England to negotiate a coal contract his loyalist government desperately needs as civil war rages in his country. He has a chance encounter with Ms. Rose Cullen (Bacall). When a rival agent Licata (Franken) crosses paths, Denard is beaten up before managing to get himself to London. At his hotel he befriends the young and innocent maid Else (Hendrix). He leaves for a meeting with Contreras (Lorre). Muckerji is a guest and Mrs. Melandez is the proprietor of the hotel where Denard is staying. With Contreras watching, Melandez pushes Else from an upper floor open window after Denard has gone to his meeting with Lord Benditch (Rose's father) to negotiate the coal deal. The deal is nixed as his papers are missing, courtesy of the valet who helps him with his overcoat.
The police have arrived due to Denard's association with the late Else and believe he is a suspect in her death. At this point the good-natured Denard snaps, draws his gun, and vows justice against those who have taken the innocent girl's life. Fleeing the building into the fog, he finds a temporarily vacant apartment and is able to elude police detection. He calls Rose and lets her know he is safe for now. Venturing back to the hotel where Muckerji is asking questions of Contreras and Melandez about the death of Else, Denard sees Contreras flee the scene, tracks him down, and takes him back by taxi to the abandoned flat. Denard interrogates the terrified man before Rose shows up and Contreras collapses from a heart attack in the bathroom. A neighbor knocks on the door spying the inert body on the couch and is eventually sent away. Melandez, told by Muckerji he has evidence of her guilt, takes poison and nearly dies. Denard goes back to the hotel with his gun to confront the murderer. Finding her delirious, he slaps her face and leaves her to die.
Denard is on a train to the northern town of Benditch to try to get the miners not to work for the Nazis. He is shouted down and hit with a stone by the unruly miners before being whisked away by Rose and her auto. Rose takes him to the only man who can help get him out of the country. The next evening the two men drive to the coast and Denard is told the coal deal is off so his mission has not been a total loss. He is let out near a small port town in the dark. He walks to the Hotel Moleto where he has a room waiting. No sooner has Denard checked in, then he is spotted and identified as a fugitive. Very quickly the police are called and two men show up to remove him. He is relieved to find out they are not the police but men hired to ship him back to the continent. As the ship is under way Rose appears on deck and the two lovers kiss.
The review of this Movie prepared by David Fletcher