Maurice Denham

Mestor’s true plan is revealed and the Doctor's old Gallifreyan friend Azmael comes to the realisation that he has been corrupted long enough by the Gastropod leader.

On Jaconda, Mestor’s cruel domination over the planet's population continues while on Titan Three, the Doctor seems to have been blown up in a booby-trapped building...

Mestor claims that all he wants is for the Sylvest twins to help him repopulate his home planet but the Doctor knows there’s more to this than meets the eye...