Part OneSeries Episode Number: 448
World Premiere: Sat 26 Feb 1977 - 6:32pm GMT [BBC One] (United Kingdom)
First Broadcast: Mon 2 Jun 1980 - 5:30pm CDT [WTTW 11 Chicago]
Running Time: 24 minutes 44 seconds
11.30 Million (UK)
Chart Position: 16 () (UK)
Recorded on Sun 23 Jan 1977 in TC1
The Doctor and Leela arrive in Victorian London where a number of young women have disappeared. A man's body is lifted from the Thames, covered in the bite marks of a giant rat.