First edition.
124 pages, plus 3 pages advertising other Doctor Who books and 1 page coupon for information about Target Books, free Target badge and the Target prize draw.
Cover by Steve Kyte.
Novelization of the 1974 serial written by Brian Hayles.
A Target Book.
Published by the paperback division of W. H. Allen & Co. Ltd.
A Howard & Wyndham Company.