Edition: Paperback original - first printing.
New York: Perma Books / Pocket Books, Inc., (1958). First edition - The seventh book in the 87th Precinct series. "Detective Cotton Hawes tracks down a compulsive murderer.". Perma Book M Series M-3119. 148 pp plus 2 pp ads. Good girl cover art by Charles Binger.
Condition: Good overall - front cover illustration is bright and attractive, but several pages were not evenly trimmed on the fore-edge (a publishing flaw), first page preceding the title page is detached but present.