An American surgeon (Cary Grant) and his wife (Paula Raymond) are detained against their will in a fictional South American country to save the life of the country's dictator (Jose Ferrer). Compelled by a sense of duty, the physician performs a successful surgery despite his abhorrence of the dictator and his government.
Before the surgery, the physician negotiates safe passage out of the country for his wife. However unbeknownst to him before the surgery, she is kidnapped by revolutionaries. They convey word to the doctor that their ransom demands that he cause the dictator's death. This demand betrays the physician's previously felt allegiance with the revolutionaries whom he believed to have been acting from ideals of liberty and justice.
The dictator does die, although not at the hand of the physician. Ironically he dies because he does not follow the physician's advice. Believing that the physician complied with their demands to kill the dictator, the revolutionaries allow the couple to return to the United States.
