The Mardi Gras Two Step  (English, Electronic book text, Vass Barry M)

A series of young girls, strippers, are found mutilated and abandoned in the streets and byways of the French Quarter in early 1972. As more bodies turn up, at first in the Mississippi River, and then across the river in Algiers, the detectives assigned to the case are baffled: what sort of deviant could be responsible for such horrific behavior? And then, as the chaos of Mardi Gras crashes in like a wave around them, they begin to suspect that the killer they're looking for might not even be human...