Avsnitt 17

When the bodies of two missing deputies turn up, it points to a serial killer who has been terrorizing the northwest. Volchek assigns the investigation to Vinnie when Stem loses control. Frank warns Vinnie he has to leave after Dan tells him there's a 40 man task force on the way to Lynchboro. As Volchek tries to eliminate possible suspects, Stem confesses to the murders, then electrocutes himself . Vinnie flashes back to Sonny killing himself, then snaps and takes off, stealing Frank's car.(source: http://www.plasticcow.com/wiseguy)