Dexter (tv series) details. She also reveals that the other man in the picture is alex tilden (scott grimes). Lumen informs dexter that she will only tell him the name if he lets her kill him, despite dexter's concern that it. The barrel girl gang are the main antagonists in season five of dexter. They were portrayed by scott grimes (alex tilden), shawn hatosy (boyd fowler), chris vance (cole harmon), sean.
Heather S Shocking Plot Twist Stuns Viewers On The Young