Below is the episode description and promo for next weeks episode;
JENSEN ACKLES DIRECTS – While Rowena (Ruth Connell) 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. 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.
Written by: Brad Buckner & Eugenie Ross-Leming
DEAN AND SAM FACE THEIR OWN BATTLES — Dean (Jensen Ackles) helps Jenna (guest star Laci J. Mailey), the nurse he met after the Darkness fell, get back home safely and then sets off to help Sam (Jared Padalecki) deal with a town infected by a mysterious and deadly gas. However, when Jenna falls into dangerous hands, she calls Dean for help and Sam tells him to go back to her. Unfortunately for Sam, he isn’t able to handle the townspeople turned monsters as easily as he thought. Phil Sgriccia directed the episode written by Andrew Dabb (#1103). Original airdate 10/14/2015.