Supernatural faces a tall task on Friday night: following up an episode that earned a perfect rating from our critic.

It will attempt to do so with "...And Then There Were None," an installment that focuses on a search for The Mother of All’s latest monster. Look for Sam, Dean and Bobby to run into Samuel and Gwen during this mission, as all will be hunting the creature.

From there, Samuel and Bobby get into a heated fight and... just watch the official CW preview for an early look at the episode.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.