This is an outrageous Italian crime flick with an insane plot about a police lieutenant's sister who gets killed in a party and some pretty interesting secrets start to unravel. Directed by veteran Alberto De Martino, this boasts some hilariously ridiculous scenes, such as Stuart Whitman beating up three transvetites. The long car chase in the middle of the film is one of the best and one of the stupidest I've seen - yes, at the same time.
If you enjoy stupid films that aren't bad, this is especially for you.
More Overlooked Films at Todd Mason's blog here. (Seems like they are not up yet, as the Americans are not up yet.)