The Deader They Fall — Peter Chambers

The Redbourne jewels had been missing for two years. Silky Sam Willard wanted Mark Preston to locate them, sharing the reward. But people interfered - hard-faced people, like Marco, the cigar-butt specialist, Henny the shotgun artist, and Mr. Laurenti. However, there were compensations too, like lovely Ella Kenyon, and icy Carol King... All Preston had to do was unmask a killer and locate the jewels - but it wasn't so simple.