THE DEADLY SKY (also issued under title 'Ten from Infinity'.)
Edition: Paperback original - first printing.
New York: Pinacle Books, (1971.). First edition - From the cover: "Ten neat and tidy men programmed for destruction... A stranger in New york is hit by a cab and his leg is broken. He is rushed to the night emergency ward of a busy Manhattan hospital, where an overworked intern takes care of him.And only later realizes, crazily, nightmarishly, that the man has two hearts." #P023-N. 188 pp.
Condition: Very good (minor rubbing and wear to the covers).