A saloon owner falls in love with the abused wife of a heavy gambler. He is snared into a web of intrigue when an ex-girlfriend is found murdered in his apartment.
Two men working on the docks close to London's Tower Bridge find the body of an unidentified man floating in the Thames. The police later identify the body to be that of a diamond courier from Holland. The police have to find his murderer, as well as the missing diamonds he was carrying.
In this crime drama, an escaped convict is recaptured and charged with killing two people in a lonely waystation during a snowstorm. Fortunately, a novelist is around to prove him innocent.
Antonio Riccardi, a rare stamp dealer who is secretly a hired killer, pays for the violin lessons of his gifted brother Giuseppe. To meet the expenses of Giuseppe's concert debut he accepts a further job, but his decision to do so provides Detective Inspector Carson, who has long hoped to ensnare Tony, with an opportunity that might now enable him to bring about his downfall.