The TARDIS arrives on Earth in a new ice age. The travellers make their way into a base where scientists, commanded by Leader Clent, are using an ioniser device to combat the advance of a glacier.
Patrick Troughton
Frazer Hines
Deborah Watling
Peter Barkworth
Peter Sallis
Score: 5.2
Score: 6.0
Score: 5.1
Score: 6.8
Score: 10.0
Score: 2.3
Score: 6.9
Score: 7.3
