In Florida, newly married Patricia Van Dyne is stunned when her husband Tony robs the home of their society hosts, Elaine and McKay Standish. Although Pat resists, Tony forces her to flee with him and his gang. When they are alone, he promises to kill any man who comes between them. The police trace them to a train headed for Chicago, but Tony escapes, leaving Pat to face the police. Mike O'Hara, the police detective assigned to the case, does not believe Pat when she insists that she knew nothing of Tony's business. Despite his feelings, he arranges for a good defense lawyer for Pat, hoping that she will agree to lure Tony from his hideout. Pat is acquitted, and the Standishes, who firmly believe in her innocence, invite her to stay with them until her divorce is final. When news of Pat's impending divorce fails to attract Tony, Mike's supervisor suggests that he pretend to marry Pat. Pat reluctantly agrees to the plan, but Tony's men spot the police in attendance and do not stop the ceremony. Although Pat and Mike are not in love, they are nonetheless legally married and leave for a honeymoon. At their hotel, Tony and his men easily overpower Pat and Mike's guards and force Pat to leave with them. After a high-speed chase, the criminals arrive at small town in the Florida Keys, from which they intend to travel to Havana. That night, alone in her room, Pat cuts the telephone wire outside her window and attaches a note with Mike's name and number. The repairmen contact the police, who rescue Pat after a shootout kills Tony. Returning home, Mike apologizes to Pat and tells her she can have a divorce whenever she wants. To Mike's delight, Pat responds that she will not need a divorce as she never intends to get married again--she is happy with the marriage she already has.