Supernatural Episode 7 Season 12

Lucifer realizes that as Vince Vincente, he can get his fans to do whatever he wants. 

Thrilled with this power, he arranges a VIP concert in order to kill them. 

Sam, Dean and Castiel enter the underbelly of the music industry to stop him.

As you all witness how when hunters gather together to celebrate the life and tragic death of one of their own, Sam, Dean and Mary took action when a demon starts picking off hunters one by one in Episode 6.