FANDOM

61,021 Pages

Professor Ptolem was the Thal scientist in charge of the Dalek research into the Mutant Phase, as they thought any contact with it would affect them. With help from the Fifth Doctor and Nyssa, he discovered the cause of the Mutant Phase, then travelled back through time to complete the research. (AUDIO: The Mutant Phase)

Ad blocker interference detected!


Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.