Cat of Many Tails — Ellery Queen

The silent rush of footsteps, the muffled shriek, the ever-tightening noose of exotic silk ... the mark of the Cat. The Cat had claimed number nine.The Cat had nine kills, but Ellery Queen found number ten alive and offered the victim temptingly to the killer. The trap was baited, and Ellery and the police poised for the strike that had to come. But the strangler struck elsewhere--and Queen's heart chilled at the thought of what he would find.