Noir is an expansion authored by Stephane Anqetuil, a very talented writer with credentials including Sherlock Holmes Consulting Detective scenarios as well as escape room books. In Noir, the whole group is collectively representing one private detective with unconventional methods. Instead of Forensic Contacts, players have 4 action cards they can use at any point and any moment: Spy, Break-In, Bribe, Intimidate. You won't be able to intimidate everyone without repercussions.
Also, your money is in a shortage, so you can't bribe everyone you meet.
This expansion really brings another side to crime-busting!