Stephen Ransome - Drag the Dark (Panther edition)

First published in the U.S. by Doubleday (hardback) in 1953 and by Ace, as part of a Mystery Double (paperback) in 19514, both as by Frederick C. Davis. This edition published in the U.K. by Panther (1133) in 1960 under his pseudonym of Stephen Ransome. Cover art is not credited.