Four of you had a letter sent to you, 10 minutes ago.
"At dawn tommorow you are required to go to the docks. You will then go on the ship. There will be three of your fellow cops and the infiltrated mafia member. Good Luck."
You had an hour before you had to go on the ship.
Cop head start
Paranoid = Naive
Naive = Paranoid
Cop = Mafia
Mafia = Insane cop.