An unabridged reading of this classic novelization, based on a BBC TV adventure featuring the Third Doctor. A mysterious power loss strands the TARDIS on Exxilon, a sinister fog-shrouded alien planet. The Doctor meets the survivors of a beleaguered expedition from Earth, while Sarah finds a mysterious super-city and becomes a captive of the savage Exxilons. Worst of all, the Doctor's greatest enemies, the Daleks, arrive on a secret mission of their own. The Doctor and Sarah must risk their lives time and again in a desperate attempt to foil the Daleks and save millions of humans from a horrific plague. Duration: 2 hours 30 minutes approx.About the Author: Terrance Dicks first wrote for radio and television, included scripting episodes of Crossroads and The Avengers. In 1969 he became the script editor for Doctor Who, and went on to become one of the most influential figures in the series' history. He wrote more than 50 novelizations, as well as two spin-off stage plays and several television scripts.