Police Inspector Trent (Ralph Bellamy) is called in by Edward Arnold (William Jeffrey) who lives in a lonely mansion, he is convinced he is going to be murdered and wants Trent to protect him. Unfortunately Arnold is killed mere minutes after recruiting Trent, the detective moves to find out what or who killed Arnold...
So basically this is an Golden Age type dark house murder mystery, a complicated murder case with a number of potential suspects including his secretary (Claude Gillingwater) and his ward (June Collyer). Arnold was killed by an injection, was it the Doctor (Arthur Pierson)?
Well there is nothing really that original in this film but it's nicely done, Bellamy plays a good and energetic role as the detective trying to unravel the crime. Who killed Arnold and why? A couple of interesting twists elevate the film.