"All is not well at the Wenley Moor underground atomic research station : there are unaccountable losses of power-output ; nervous breakdowns amongst the staff ; and then--a death! UNIT is called in and the Brigadier is soon joined by DOCTOR WHO and Liz Shaw in a tense and exciting adventure with subterranean reptile men--SILURIANS--and a 40 ft. high Tyrannosaurux rex, the biggest, most savage mammal which ever trod the earth!"--back cover.

"Three hundred and fifty million years ago, dinosaurs crawled the Earth, devouring everything in sight. But then they disappeared. Certainly, no one ever expected them to return... When Doctor Who lands in London and finds the entire city deserted--except for dinosaurs--he figures something really weird is going on. It is. A clever group of misguided idealists is at the center of a bizarre plot to reverse Time to a golden era--an era before technology,...

"Doctor! screamed Jo. Look at that thing. Its coming straight at us! A small, black spaceship, about a mile away, was approaching rapidly. It had no lights, no markings. But some instinct told Jo that the tiny craft meant danger.The year is 2540, and two powers loom large in the galaxyEarth and Draconia. After years of peace, their spaceships are now being mysteriously attacked and cargoes rifled. Each suspects the other and fullscale war seems unavoidable.The...