Doctor Who: The Monster of Peladon (TV)

The TARDIS returns to Peladon some fifty years after the Doctor's last visit. The planet is now ruled by Queen Thalira - daughter of the late King Peladon - with advice from Chancellor Ortron. The Doctor and Sarah are arrested by Ortron for trespassing on sacred ground but their names are cleared by Alpha Centauri, now Galactic Federation ambassador to Peladon. A ghost-like image of Aggedor has been responsible for some deaths in the planet's trisilicate mines, heightening unrest amongst the miners. The Doctor discovers that the apparitions are really the result of the use of a matter projector and a directional heat ray by a human engineer, Eckersley. Eckersley is in league with a group of renegade Martian warriors, led by Commander Azaxyr, in a plot to seize the trisilicate deposits for Galaxy 5, a power bloc at war with the Federation.