Italian thriller shot in France. The main character, Inspector Dreville, is played by American actor Tom Drake and the other characters by Italian actors who speak in Italian but have French names. If you can accept that, you'll maybe make it to the end of the film. It's a pre-giallo but we never see a murder because they didn't have enough money to pay a special effects technician, I suppose. Instant crap.
Early giallo that predates both Bay of Blood and all of Argento's work. However, it doesn't have much to offer. As it only has a complicated plot-- since there is no actual story to speak of-- and it never adds depth to its characters apart from using them as plot devices. Deadly Inheritance also lacks much suspense or tension, making it not entertaining. It may, however, sport an OK final 20 minutes, but that's it.