Doctor Who: Black Thursday / Power Game (248)

Black Thursday by Jamie Anderson
1902. Deep beneath the Welsh village of Abertysswg, men have worked the black seam for generations. Until the day of the disaster. The day that a blue box from the future materialised inside the mine.... and things would never be the same again.

Power Game by Eddie Robson
Welcome to the Incredible Power Game, in which three brave Earthlings enter the Void Pit in search of strange gems to help return the alien Hostess to her home dimension. Today's contestants include Graham, Sadia... and Tegan, an air stewardess from Brisbane!