Thriller (1974)🔸Once the Killing Starts (S2E2)

Once the Killing Starts (S2E2): Married college professor Michael Lane falls in love with one of his students and hatches an elaborate scheme to dispose of his wife, Elizabeth. His murder plot goes as planned. However, he soon receives an anonymous note: "I know what you did, murderer!" Prof. Lane frantically tries to discover who knows his secret... It features Patrick O'Neal, Angharad Rees, Michael Kitchen, and Gerald Sim. Thriller is a British television anthology series, which aired from 1973 to 1976. A series of self-contained episodes with the genres ranging from murder mystery, to suspense, to psychological, and supernatural horror.