Last updated 24 March 2024


Part Four

Series Episode Number: 521

World Premiere: Sat 15 Dec 1979 - 5:56pm GMT [BBC One] (United Kingdom)
First Broadcast: Fri 5 Oct 2001 - 10:30pm CDT [Prairie Public Television]
Running Time: 24 minutes 31 seconds

9.40 Million (UK)

Appreciation Index: 65 (UK)

Chart Position: 32 () (UK)

Recorded on Tue 28 Aug 1979 in Television Centre 6



The Doctor solves the mystery of the drug smuggling racket and the culprits are revealed. But unless the Doctor and Romana act quickly, the villains will escape justice.