Supernatural's Sam and Dean Winchester will be on dipper duty as they battle one of the Darkness' biggest mysteries in season 11.

'Supernatural' Season 11 Spoilers: Pride Before The Fall? EP On Rowena's Plans

The Winchester bros. better stock up on formula and onesies - the hunters will soon have to deal with their tiniest victim/monster since season 6. If you've seen the series' latest promo, you know exactly who were talking about.

Somehow connected to the Darkness, the little tyke will start to cause problems in episode 3, "The Bad Seed." Unfortunately for the boys, the infant troublemaker will have them on red alert just as Rowena (Ruth Connell) reenters the picture stronger than ever.

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"While Rowena tries to consolidate her power to protect herself from the Winchesters, Sam (Jared Padalecki) and Dean (Jensen Ackles) search for a missing baby connected to the Darkness," The CW teased. "Meanwhile, Castiel (Misha Collins) struggles to heal and Crowley (Mark Sheppard) tries to find a way to use the Darkness for his own personal gain."

Will the unnamed baby be the same child from the premiere photos (see above)? Born in "Out of the Darkness, Into the Fire," this baby could certainly have a connection to the evil that was released just hours before its apparent birth.

Rejoin the hunt when Supernatural's 11th season comes to The CW on Oct. 7 at 9 p.m. ET.

Tags: supernatural television the cw