Shattering Glass — John Russell Fearn

The girl had been lying dead all night. There'd been a terrible struggle, but in the end, the woman had lost her life to the jagged top of a cologne bottle--her jugular vein severed. Suspicious immediately falls on Richard Lane, who'd planned to meet the deceased at seven o'clock, just before she died. But is Richard really the killer? Only criminal psychologist Dr. Adam Castle can unravel the perplexing mystery. An edge-of-the seat thriller torn from the pages of the 1940s magazines. First of the Dr. Castle series.