Theodore Lehmann

An alien spaceship invades the Robinson space colony, looking for a humanoid brain to replace a computer.

A ring stolen by Dr. Smith turns everything he touches into platinum; guest Werner Klemperer.

Maud Hoad leads her revenge-seeking family against Joe, who was forced to shoot treacherous Jeb Hoad.

Lou is afraid Mary is becoming addicted to sleeping pills when she turns to a doctor's prescription for help sleeping.

Philip and a young computer whiz, whose father (Conrad Janis) is Diana's prisoner, help the Resistance break into the Battlesphere.

Dateless for New Year's Eve, Flo is recruited to work in the diner.