First edition.
121 pages, plus 6 pages advertising other Target children's books including Doctor Who's and 1 page, coupon for information, free Target badge and Target prize draw.
Cover by Steve Kyte.
Novelization of David Fisher's.own screenplay of the 1979 serial.
A Target Book.
Published by the paperback division of W. H. Allen & Co. Ltd.
A Howard & Wyndham Company.