London: W.H. Allen, 1978

8vo, pp. 126. Original grey boards, lettered in gilt to spine. Illustrated dust jacket, author's photographic portrait to rear flap. Usual browning to cheap paper stock, corners a little bumped, but a very good copy in a very good dust jacket with just a little light edgewear, a couple of red ink marks to rear flap, and a small indentation to front panel near spine.

First edition of this novelisation tie-in from the Tom Baker era. Terrance Dicks here adapts a story written by Terry Nation for the thirteenth series of the TV series; Dicks spent five years as the show's script editor.

Scarce, and getting scarcer.