Larry Kent: Sidewalk Empire

Larry Kent was on the trail of a master blackmailer. Whoever he was, he was making a fortune from his victims’ misery. One of those victims was a friend of Larry’s, so that made it personal. It also made him determined to find the blackmailer and deal with him by any means necessary, legal or otherwise …
But first he had to find his man – always assuming it was a man he was after. There were plenty of women in the frame, too, from the cold-hearted secretary, Lisa Crane, to the dope-addled good-time girl, Jane Davis. Then there was Ralph Harlowe, the actor who’d hit hard times, Denison, the financier who doubled as an amateur hypnotist, and even the one person who should have been above any suspicion at all … a tough cop called Kruger! (Book 750)