First edition.
126 pages, plus 1 page advertising other Doctor Who books and 1 page coupon for information, free Target badge and Target prize draw.
Cover by Andrew Skilleter
Novelization of the 1980 serial written by John Flanagan and Andrew McCulloch.
A Target Book.
Published by the paperback division of W. H. Allen & Co. Ltd.
A Howard & Wyndham Company.