City of Death Synopsis
The Doctor and Romana visit Paris for a holiday. When the Mona Lisa is stolen, the Doctor comes upon evidence of sinister time experiments being carried out by a wealthy Count, Scarlioni. He soon exposes a plot by Scaroth, the last of the Jagaroth race, to re-write the history of Earth by avoiding the destruction of his space ship – but it was this explosion that led to the formation of life on Earth!