Alan Bennion

Phipps finds a way to both contact Earth and melt an Ice Warrior; Doctor, Jamie and Zoe volunteer to crew Eldred's rocket.

The Doctor, Zoe and Jamie make it to the moon and ally with Phipps, but learn that the Ice Warriors have taken control of T-mat.

The Doctor manages to destroy the Martian fungus by creating a rain storm and tries to find a way to stop the Ice Warriors' invasion fleet.

The Doctor knows the Ice Warriors of old and believes them guilty of sabotage.

The Doctor and Jo find themselves involved in interplanetary skulduggery on Peladon, which has applied to join the Galactic Federation.

The Doctor is sentenced to a fight to the death in the pit with the King's champion.