In this next "Supernatural," Dean (Jensen Ackles) sends Sam (Jared Padalecki) to investigate without him when straight-laced people are turning into violent murderers. While interviewing the locals, Sam talks to Julia (Jenny O'Hara), who tells him the Men of Letters came to town in 1958 and the story of Henry (Gil McKinney) and Josie Sands (Alaina Huffman).
Meanwhile, Dean struggles with the after effects of the Mark of Cain, and while Sam's away on the case of possible possession, Crowley (Mark Sheppard), who declared in "Blade Runners" that he would keep the Blade since he couldn't trust them anymore than they could trust him, tests Dean.
The "Mother's Little Helper" promo shows that while Dean's going to be dealing with what's happening to him because of the Mark of Cain and the First Blade, Sam's going to be finding out some family secrets – and getting into serious trouble. Also, get a look at the flashbacks featuring Henry and Josie.
Plus, don't forget to check out the slideshow to see the promotional photos the CW has released from this episode, including behind-the-scenes ones of Misha Collins directing.
"Supernatural" season 9 airs Tuesdays at 9 p.m. on the CW. What do you think of the episode 17 "Mother's Little Helper" photos and promo?