New York: Ace Books, 1972. First Edition. Uncommonly sharp, unread copy of this early science fiction novel by Koontz, published 5 years later as a hardcover by the author's UK publisher (Dobson). Item #2083
First Printings, both titles paperback original novels (Ace 00990). Octavo; illustrated wrappers; yellow-orange edge-staining; 109, 144pp +  ad leaves. Tiny ownership label to verso of front wrapper, else Fine and unread, with the edge-staining bright and even.