In the later audio "The Widow's Assassin", The Doctor travels to Krontep to attend Peri's wedding, only be locked up for abandoning her. However, despite apparently spending five years in prison, The Doctor actually spends that time carrying out a complex long-term investigation into the death of King Yrcanos shortly after the wedding, eventually learning that 'Peri' is actually possessed by The Doctor's childhood imaginary enemy, Mandrake the Lizard King, who was 'extracted' from The Doctor's mind when he was exposed to Crozier's equipment. After transferring himself into Peri's body to expel Mandrake, The Doctor and Peri return to their true bodies and resume their travels together. In "Masters of Earth", they arrive on Earth during the Dalek occupation, a year before the events of "The Dalek Invasion of Earth" from Earth's perspective, forcing The Doctor to help a future famous rebel figure escape without compromising history. In "The Rani Elite", The Doctor and Peri visit a famous university and are nearly caught in a trap set by a version of the Rani who has already experienced the events of "Time and the Rani"; the crisis ends with Peri receiving an honorary degree in botany to accompany The Doctor's honorary degree in moral philosophy.