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Professor Robinson is caught in a matter transfer emission ray, and subsequently ends up in another dimension where he is confronted by a version of himself and Don. However this realm is the opposite of his own dimension, the anti-matter world, where everything in reality is twisted. The evil John returns to the family and attempts to take over the Robinsons and take over John's life. Will he get away with it, or are Will and the Robot able to defeat him, and restore the world to it's natural order.
First Air Date : Sep 15, 1965
Last Air date : Mar 06, 1968
Episode : 83 Episode
Season : 3 Season
Runtime: 60 minutes
Studio: CBS
Country: United States of America
