Romance and suspense ensue in Paris as a woman is pursued by several men who want a fortune her murdered husband had stolen. Who can she trust?

Mr. Verloc is part of a gang of foreign saboteurs operating out of London. He manages a small cinema with his wife and her teenage brother as a cover, but they know nothing of his secret. Scotland Yard assign an undercover detective to work at the shop next to the cinema in order to observe the gang.

Passengers on a scheduled train out of the mountainous European country of Mandrika are delayed by a day due to an avalanche, and thus get up close and personal with each other out of necessity in the only and what becomes an overcrowded inn in the area. Once the train departs, the one person who it is uncertain is on the train is a middle aged English governess named Miss Froy. Iris Henderson, who was vacationing in Mandrika with girlfriends before heading back to England to get married, is certain that Miss Froy was on the train as they were in the same compartment and they had tea together in the dining car, but all those people who can corroborate her story don't seem to want to do so. Iris' thoughts are easily dismissed as a possible concussion as Iris was hit over the head just before boarding the train. Iris will take anyone's help in finding Miss Froy, even that of an Englishman named Gilbert, a musicologist with whom she had a not so pleasant encounter at the inn the evening

When illegal card dealer and recovering heroin addict Frankie Machine (Frank Sinatra) gets out of prison, he decides to straighten up. Armed with nothing but an old drum set, Frankie tries to get honest work as a drummer. But when his former employer, small-time con man Schwiefka (Robert Strauss), and Frankie's old drug dealer, Louis (Darren McGavin), re-enter his life, Frankie finds it hard to stay clean and eventually finds himself succumbing to his old habits.