Lillian Stanhope and Nicholas Frame are two famed actors in London, a venerated husband and wife team set to act in 'Macbeth.' Producer Sir Roger Haversham has been Lillian's lover but finds out he has been deceived by the couple and threatens to interrupt their engagement. Lillian kills him accidentally during an ensuing fight. Thereafter, the pair take the corpse to his mansion and stage his "accidental" death; however, Lt. Columbo (in London to learn about new investigation methods used by Scotland Yard) smells something fishy in this supposed accident. Written by
Baldinotto da Pistoia
Did You Know?
Inside joke: "Lillian Stanhope" (Honor Blackman) says "I've always wanted to be in a horror movie." 'Dagger of the Mind' aired on 11-26-72. Just six months earlier (5-30-72), the horror movie 'Fright" was released, which featured Honor Blackman. See more
During Frame and Fenwick's tuppence-a-point darts game in The Kings Arms, a man stands at the back watching the match. His stance alters notably between shots after Joe takes his second throw. See more
Most people, Columbo, have frightful taste, yourself included.
John Fraser, who is Scottish, and Richard Pearson, who is Welsh, are credited as "From London - Special Guest Stars". See more
The British Grenadiers
[British march from 1600s] See more