Doctor Who: Planet of Fire

Planet of Fire is the fifth serial of the 21st season in the British science fiction television series Doctor Who, which was first broadcast in four twice-weekly parts on BBC1 from 23 February to 2 March 1984. In the serial, the Doctor's old enemy, the Master, plots to use the volcanic gases on the planet Sarn to renew his body after accidentally shrinking himself in an experiment. Peter Davison's penultimate serial as the Doctor, it marks the departures of both Mark Strickson as Vislor Turlough and Gerald Flood as Kamelion, and introduces Nicola Bryant as Peri Brown.