Blackmailer

At the dinner party, a guest mentions that the cat's eye in his ring glows in the dark. Everyone wants to see it, so the butler turners out the lights. The glow form the gem appears, there's a scream, and a man in dead. Soon Inspector Paul Hurst is on the scene to solve the murder. Fortunately William Gargan is around to tell him how to do it.

It's not a great comedy-mystery, but it has its moments, particularly when Herman Bing as the corpse-phobic coroner comes in to verify that yes, these are dead bodies. Hurst shows considerable comedy chops in his timing, and there are such stalwarts as H. B. Warner, Florence Rice, Kenneth Thomson, Nana Bryant, and Victor Kilian to add to the general silliness.