Last updated 26 April 2017



Series Episode Number: 179

First Broadcast: Wed 31 May 2017 - ~8:00pm UTC (United Kingdom)
Running Time: 75 minutes

The Silurians hold Great Britain under siege. Grand Marshal Jastrok rules the seas and the skies with reptile forces. On the ground, Commander Kalana crushes all ape resistance.

With Kate Stewart trapped, defence of the realm falls to UNIT’s old guard. Jo Jones, Mike Yates and John Benton are ready to do their duty and stand united.