Planet Of Fire

An archaeological expedition finds a strange artefact, which is in fact an alien beacon. Thinking it might be valuable an Earth girl takes it to sell, and jumps into a lake to swim to shore.

She runs into trouble whilst in the lake and is rescued by Turlough, who takes her on board the TARDIS. The Master manages to reassert control over Kamelion, and commands it to take the TARDIS to him on the planet Sarn.

The Master had a small accident with his tissue compression eliminator and has himself become shrunk. He plans to use the planet's revitalising numismaton gas to restore his size.

Turlough discovers that the people of Trion are, or are descendants of, Trion prisoners from a crashed prison ship. Turlough is also one of these prisoners, although he was exiled to Earth with a guardian. On Trion he discovers his long lost brother.

The Master becomes trapped by the numismaton gas as it turns to flame, and is believed to be destroyed. Meanwhile the Trions have extended amnesty to all prisoners, and he leaves for his home world. At Kamelion's request, the Doctor destorys the robot, and leaves with his new companion Peri.

• The Master: Anthony Ainley;
• Voice of Kamelion: Gerald Flood;
• Chief Elder Timanov: Peter Wyngarde;
• Sorasta: Barbara Shelley;
• Amyand: James Bate;
• Professor Howard Foster: Dallas Adams;
• Malkon: Edward Highmore;
• Roskal: Jonathon Caplan;
• Lookout: Simon Sutton (1-2);
• Curt: Michael Bangerter (1);
• Zuko: Max Arthur (2);
• Lomand: John Alkin (4);


• UNCREDITED CAST:
• Kamelion: Anthony Ainley, Dallas Adams;
• Boatmen: Miguel Ange Lopez (1), Severino Reye Perdoni (1);
• Customers at Cafe: Mrs. Bangerter and two children (1);
• Passersby: (all 1) Enrique Ramiles Lubgauwa, Migua Aoyes Perdoma, Carmelo de Leon Thursado, Dominez Hermandez Tornedo;
• Trion: Ray Knight (4);
• Guards: Steven Arnely, Robin Bond, Derek Hunt, David Rogue; Citizens: Andy Andreas, Paul Barton, Barbara Burnell, Ian Marshall Fisher, Jill Goldstone, Rosalind Kendal, Penny Lamberth, Valero Martinez, Stewart Myers, David Payne, Jenny Piper, Brychen Powell, Mary Rennie, Bob Smythe;