Release Message:  Hearing about a man who has threatened to start a robot revolution, the Doctor (Tom Baker) takes D.84 to seek out a possible secret workshop where he would be restructuring robot programming.

Description:  Hearing about a man who grew up only around robots and who has threatened to start a robot revolution, and who may be aboard the sandminer under an assumed name, the Doctor takes D.84 to seek out a possible secret workshop where he would be restructuring robot programming. Meanwhile, as one crew member suffers a complete mental breakdown, reprogrammed robots are ordered to kill all remaining humans.