Part OneSeries Episode Number: 633
World Premiere: Sat 16 Feb 1985 - 5:22pm GMT [BBC One] (United Kingdom)
First Broadcast: Sun 13 Apr 1986 - 11:00pm CST [WTTW 11 Chicago]
Running Time: 44 minutes 22 seconds
6.60 Million (UK)Appreciation Index: 65 (UK)
Chart Position: 92 () (UK)
The Second Doctor and Jamie visit space station Camera to speak to the scientist Dastari, but the station has a saboteur aboard - Chessene is working with the Sontarans...