Checkmate is an American detective television series starring Anthony George, Sebastian Cabot, and Doug McClure. The show aired on CBS Television from 1960 to 1962 for a total of 70 episodes and was produced by Jack Benny's production company, "JaMco Productions" in co-operation with Revue Studios. Guest stars included Charles Laughton, Peter Lorre, and Lee Marvin, among many other commensurately prominent performers.

William Carter, a young Virginian in Paris, becomes enchanted with music hall dancer Fanchon La Fare. After William reluctantly returns to America, Fanchon follows him, and when she is threatened with deportation because of an irregularity in her passport, William marries her. The marriage causes consternation in the upright Carter family, which is compounded when Fanchon performs one of her dances at a church benefit. At the conclusion of her dance, Fanchon sees a stranger in the audience and faints. Later, the same man appears at the Carter residence and demands to see her. Leigh Carter, William's younger brother, becomes angered and shoots the man. At the trial, Fanchon confesses that the stranger was her estranged husband whom she had been forced to marry when she was but a child. The crime thus clarified, Leigh is freed, and Fanchon, who had been expelled earlier from the Carter house, is welcomed back by her husband and his family. (Courtesy TCM)

Romance between the playwright Harry Bryant and the homeless and illiterate Kate.

A fabulous jewel known as the 'Dark Star' is stolen; a pastor's daughter gets involved, falling into the depths of a spy plot concerning war plans and fortifications...

Bored by the slow pace of life in her little home town, Helen Drayton rebels when her friends and relatives assume that she will marry her friend and escort, Chet Vernon. Helen is so anxious to experience life in the big city that she falls in love with visiting New York architect John Galvin almost immediately after his arrival. Several weeks later, the two marry and move to New York, where, after a series of painful experiences, Helen finally realizes John's selfishness.

Spies from Japan conspire to steal the Channing "preparedness" fortune and invade the United States, beginning in New York, then allying themselves with Mexicans across the border. They are stopped by the efforts of munitions factory heiress Patria Channing and U.S. Secret Service agent Donald Parr.

A psychological study of the effects of drug addiction on humanity. Helene Ford has been injected with heroin by an unscrupulous physician, causing her to act irrationally. Her husband Stephen, a noted artist, hires a model whom Helene, inflamed by their friend Jack Murray, suspects of having an affair with Stephen. The model is also addicted to drugs and convinces Stephen to try heroin to forget his troubles. Both Stephen and Helene then become addicted to drugs. They abandon their home and then separate, after which Stephen resorts to crime to support his heroin addiction. During an escape from the police after a robbery, Stephen encounters Helene again, this time near death. She sacrifices her own life to shield her husband, but Stephen and his former model plunge to their deaths.