...And Then There Were None

Name: ...And Then There Were None
Director: Mike Rohl
Released: 2011-03-04
Duration: 42 min
Rating: 7.6
Cast: Steven Williams, Jessica Heafey, Julia Maxwell, Brent Stait, Jordan Weller

S6 E16 March 4, 2011 0h 42m ★ 7.6

Source:

Overview

Eve, the Mother of All, unleashes a new monster upon the world: a black worm-slug that can enter the brain and force people to kill. Sam and Dean join forces with Bobby and Rufus and track it to a cannery, only to discover that Gwen and Samuel are also there looking for the monster... and none of them know who the monster is inside.