A quite curious case on display here - no pun intended. Then again, the "display" scene in the movie is based on an actual case! A case the movie is losely based on. As said million times before, Life is stranger than Fiction. This movie still tries to go as strange as possible.
Having said that, the two storylines evolving here are nicely cut and edited together. And while the main police character is quite funny, there are other characters too that hold the film. Our female main character for example, who does enjoy and play with her sexuality. Now some falsely may think or judge her for that. May even wish her bad things, which is never a good thing. A free spirited individual like that, cannot be contained. One should make peace with that, otherwise one may get hurt - which leads to more hurting of course.
A really stellar cast in a I guess strange Giallo as everyone seems to point out (I wouldn't call myself an expert but those who are say so). Still strange is not bad as I hope I made clear already ...