Doctor Who: Vengeance on Varos (Target Doctor Who Library, No. 106)

The Doctor heads to the planet Varos in search of the Zeiton-7 ore he needs to keep the Tardis in operation only to find himself pursued by a sadisitic representative of the Galatron Mining Corporation The TARDIS has stalled in mid-flight, and it is only on the planet Varos that the Doctor can find the precious Zeiton-7 ore he needs to continue his travels through time and space. Arriving on the planet, he saves the rebel Jondar from execution, and incurs the wrath of Sil, the sadistic representative of the Galatron Mining Corporation on Varos. The hunt is on for the Doctor and his rebel friends. and as they are pursued through the corridors of the deadly Punishment Dome, the Doctor discovers that the people of Varos have some very disturbing ideas of entertainment...