Originally published: October 10, 1988
Author: Douglas Adams
Preceded by: Dirk Gently's Holistic Detective Agency
Genres: Science fiction, Mystery, Fantasy Fiction, and more
ISBN: 0-434-00921-0 (hardcover edition) & ISBN 0-671-74251-5 (US paperback edition)
Pages: 256 (hardcover), 320 (paperback)
Series: Dirk Gently