The Window With the Sleeping Nude — Robert Leslie Bellem

Without such a monumental hangover that rainy morning, Store Detective Barney Cunard might have chuckled at the naked clothes dummy so bawdily displayed on his desk. But the subsequent discovery of the very nude, very real and very dead body of Nora Gleason in the green-hued window of Westervelt's Department Store was no joke.
Nor was the finding of pretty Martha Deayne's stillwarm body upstairs. nor was the sudden disappearance of petite and provocative Kitty Cavane, apple of Barney's eye. When Barney could hear nothing and tried to call the police, he found himself staring into the defiant eye of Westervelt, Senior, and a gun in the hand of Westervelt Junior. Also, he quickly found himself locked up in the stout offices of the Westervelts on top of the building. Mad as a bull on a rampage, Barney escaped to return that evening, beaten and shaken by a third murder, but with bait for a trap for a killer with a quick knife-hand and a heart full of greed and jealousy.