The Krotons
Doctor Who episode
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Crystalline monsters called Krotons control primitive Gonds by educating them and utilizing their mental energy to power Kroton craft. With Patrick Troughton.
Show: Doctor Who
Written by: Robert Holmes
Air date: December 28, 1968
First broadcast: 28 December 1968
Last broadcast: 18 January 1969
Script editor: Terrance Dicks