Richard Steele

Fearful of a war breaking out between the Silurians and mankind, the Doctor attempts to make peace between the races. But there are those on both sides unwilling to listen.

As the Silurian plague quickly spreads, the Doctor desperately searches for a cure. But the Silurians are aware of the Doctor's efforts and intend to stop him.

People cannot sleep in the town of Killingworth and the Doctor realises it is the work of a renegade Time Lord, the Rani, who has teamed up with the Master to wreck chaos.

Finding evidence of alien technology in Smythe's office, the Doctor, Jamie and Zoe make their escape in Lady Jennifer's ambulance, but Smythe gives orders to have them killed.