While operating the controls on his TARDIS console, The Doctor accidentally transports his former companion Tegan Jovanka on board. Less than happy about her situation, she reluctantly agrees to help when the Doctor reveals that two Sontarans are on board with a powerful vitrox bomb with which they intend to blow up the ship.

Cast

Colin Baker

The Doctor

Janet Fielding

Tegan Jovanka

Clinton Greyn

Group Marshal Nathan

Jimmy Savile

Himself

Gareth Jenkins

Himself

Tim Raynham

Sontaran Turner