The Doctor's moods are wide and in a jumble as he settles into his new regeneration. Elsewhere a set of genius twins are kidnapped, whose mathematical computations can manipulate features of the universe. They're immediately put to work by aliens for an as yet unknown end. Written by
Did You Know?
The Doctor accuses Peri of being a "Peri" a fairy from Persian mythology. In the myth, a "Peri" is a beautiful and benevolent supernatural being or fairy. See more
I never saw anyone love himself so much for less reason.