Episode Five
Series Episode Number: 322World Premiere: Sat 6 May 1972 - 5:51pm BST [BBC One] (United Kingdom)
First Broadcast: Fri 3 Oct 1975 - 6:30pm CDT [WTTW 11 Chicago]
Running Time: 24 minutes 37 seconds
7.90 Million (UK)
Chart Position: 44 () (UK)
Recorded on Mon 27 Mar 1972 in TC3
Archive State: PAL 2 VT
With Jo held prisoner, the Doctor is forced to work for the Marshal. The Earth Investigator's ship prepares to dock at Skybase.
Home Region: