Undated, a Foyles Book Club edition from the Thriller Book Club, believed to be mid 50s (the story was first published 1954). 238pp. Hardback with dust-jacket which is protected within see-through plastic sleeve. Taken from dust-jacket inner ......... "The editor of a monthly crime and detection magazine assigns to two of his staff writers, Sladen and Low, the investigation of the strange disappearance of an unknown showgirl. The disappearance was reported fourteen months earlier, but the trail is cold. The police, with nothing to work on, have lost interest. The assignment doesn't look hopeful. However, the investigators start asking questions and almost immediately, things begin to happen. Witnesses are murdered, an attempt is made to do away with the investigators. The police once more open the case. The disappearance of the showgirl is found to be only a minor part of a ruthless murder plot.". Cream cloth-covered boards, black titles to spine, in good order, with minor bumping