Although every player will think their role is the most important. :3
Then it's even simpler. Pick three players and go to them.
Or you can use the method of elimination. Kipple, Mensik, if you're not... well, let's say, Verwolf (girls first), then go to her. Then he's the werewolf. If one of you is her, then we'll know that.
Added after 1 minute
OH LOL, I FORGOT ABOUT THE MAFIA.
Okay, Hossi, will you forgive me if Torquin uses protection on Ver?