The Doctor helping the Daleks?

Would the Time lord ever contemplate such a thing?

But why are the Daleks mutating?

Could it be related to a decline in the wasp population?

The pairing of the Fifth Doctor and Nyssa was one Peter Davison felt worked well.

The Fifth Doctor seems more thoughtful than the breathless innocent familiar to Eighties TV audiences.

The Mutant Phasewriter and director Nick Briggs is clearly enjoying himself as the various Dalek voices.