Episode ThreeSeries Episode Number: 346
World Premiere: Sat 21 Apr 1973 - 5:53pm BST [BBC One] (United Kingdom)
Running Time: 22 minutes 34 seconds
10.10 Million (UK)
Chart Position: 29 () (UK)
Recorded on Mon 05 Feb 1973 in TC6
Archive State: RSC conver
In the Dalek city, the Doctor breaks out of his prison cell and joins forces with the Thals. With the Daleks in pursuit, he is forced to improvise a daring escape plan.