Doctor Who and the cave-monsters ..

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 40ft high Tyrannosaurus rex, the biggest, most savage mammal which ever trod the earth! -- Cover description.