Last updated 24 March 2024

Episode Two

Series Episode Number: 229

World Premiere: Sat 4 Jan 1969 - 5:15pm BST [BBC One] (United Kingdom)
First Broadcast: Thu 25 Sep 2014 - 8:30pm EDT [Retro TV]
Running Time: 23 minutes 3 seconds

8.40 Million (UK)

Appreciation Index: 57 (UK)

Chart Position: 54 () (UK)

Recorded on Fri 29 Nov 1968 in Lime Grove D
Archive State: 16mm t/r

Zoe and the Doctor submit themselves to the Krotons' IQ tests and are selected to enter the Dynatrope, the Krotons' ship. There they watch as the crystalline Krotons are brought back to life.

The episode cliffhanger sees Jamie reeling under the Krotons' mind device.