Chester Morris

Boston Blackie

Rochelle Hudson

Cecelia Bradley

Richard Lane

Inspector Faraday

Constance Worth

Marilyn Howard

Jack O'Malley

Monk

George Magrill

Georgie

James Seay

Mechanical Man

Charles Wagenheim

The Runt

James Blaine

Police Captain (uncredited)

Nestor Paiva

Martin Vestrick (uncredited)