HYENA OF LONDON is a gothic mystery very much along the lines of THE BLANCHEVILLE MONSTER aka HORROR which came out about the same time. I'd call it part of the cinema of meaningful glances.
For fans of Tony Kendall, here he plays an ineffectual hero for a change. He's the secret lover of the local doctor's daughter, whose house is full of conniving servants and suspicious characters, like Luciano Pigozzi. They all stay very busy lying, cheating, and sneaking around the old dark house. Mysterious murders begin to occur in the vicinity and everyone points fingers at each other until the twist ending reveals an actual surprise.
This is an atmospheric, nicely photographed trifle that I always enjoy watching but never seem to remember much about later.
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