Mesmerizing opening with an aerial night view of Milano and the trademark giallo soundtrack which reminded me of Morricone: it must be in my top 50... maybe even higher.
Not an absolutely perfectly designed noir/police drama: I felt like I missed something that wasn't completely clear despite my efforts.
Also some scenes and parts of the screenplay were a little weak partly due to the attempt of creating authentic main characters - which is a rarity in today's marketing designed productions - partly for reasons I can't pinpoint but involve both the writer/director and the actors.
Yet it's been more than a year since I've watched something as compelling in the genre (which I'm a great fan of - as you can see from my list of over 1000 watched productions - and about which I'm starting to become hardly satisfiable).
Great music, maybe a little too dark and dramatic compared to the script, but that's nitpicking.
Photography as well tries to mimic the '70s style of giallos with its simple camera work and original lights/colors - though maybe indulging a bit too much with Milano postcards.
So if you love well designed and executed crime stories, you have to add it to your list.
The only unforgivable negative is the audio: 2/10. Better use subtitles in a language you know, because not even a mother tongue can get more than 95% of what is said in the original italian version. The most understandable italian is spoken by one asian character...
It's an 8, which means a 10 in the world of IMDB.