Lust Of The Vampire - 1957 - 6/10
AKA - I Vampiri

Not what you would anticipate.
Young women are being found in Paris drained of blood and the press dubs the killer.
As the camera tracks showgirls and college debs, you see the targets.
There is an inquiring journalist, a young duchess who flirts with him, and the besieged police.
Not to overlook the stately manor, a Gothic overload better suited to the house of Dracula.
A young Mario Bava is the DP, who makes full use of shadows, cellars, tunnels, and subliminal gems.

Despite Bava, despite the vampire, despite the gloomy trappings, this is closer to a Krimi.
And this is a lot ongoing. Mad scientist, grasping aristocrat, kidnappings, murders, even a kitten!