I worked in New York City at a mid-sized brokerage house. The place was open round the clock so if you needed, you can practically live there - included shower, changing rooms etc. The managing director was a great guy who has the one office with the boardroom taking up the remaining available space. So after about 2 years working there, I come in on a Friday or Saturday night after bar hopping alone at maybe 2-3am, and I don't see anyone else.
So while walking around, I look on the branch manager's desk and see a lighter shaped like a butane mini canister, size of a D battery next to glass pipes and vials. I recognized that it was crack, and I got out of there fast.
This is the guy who makes important decisions. I have no proof, as I didn't have a camera phone, so no evidence.
What would be the course of action to take where I don't end up unemployed and industry blacklisted?