This is quite an eerily shot, quirky, fast-paced little murder mystery from George Cooper. A man is murdered at a country manor house and Henry Kendall ("Harry") and Cyril Raymond ("Capt. Fordyce") discover that there could be a horde of stolen diamonds somewhere in the house and that the killer is after them. The identity of the killer stood out to me like a sore thumb, and the overall performances are a bit stilted - especially Ethel Warwick, but it's a decent 50 minutes to watch, nonetheless....