Part ThreeSeries Episode Number: 625
World Premiere: Thu 29 Mar 1984 - 6:41pm BST [BBC One] (United Kingdom)
First Broadcast: Tue 26 May 2015 - 8:00pm EDT [Retro TV]
Running Time: 24 minutes 27 seconds
7.00 Million (UK)Appreciation Index: 59 (UK)
Chart Position: 59 () (UK)
Mestor claims that all he wants is the Sylvest twins to help him repopulate his home planet. But the Doctor knows there's more to this than meets the eye...