S1·E2 Room with a View / The Little Black Bag / The Nature of the Enemy
Aired December 23, 1970
Synopsis
An invalid husband plots revenge against his faithless wife with the unwitting aid of his nurse. Miraculous healing, and abrupt tragedy, result when a 21st century medical bag falls into the hands of a discredited 20th century doctor. Mission control scientists watch helplessly when members of a lunar expedition are mysteriously attacked.