This routine crime drama with a dash of romance begins with a tense opening, a jewel theft is carried out almost without a word of dialogue. One of the thieves, John Bain (Trevor Howard) an expert locksmith plagued by a stint in prison, has been coerced into helping the master thief Peter Curran (Edmund Purdom) pull off the heist. Now that success is at hand, Peter double-crosses John and dumps his lover Gianna (Dorothy Dandridge) and takes off for Spain with the loot. Embittered and anxious for revenge, Gianna hooks up with John and the two of them head for Spain with an eye to getting even. As their quest brings them together, the two develop a special feeling for each other.