Ep 23. Brother's Keeper

At the start of Supernatural season 10 episode 23, titled Brother's Keeper, Dean is desperate to find a way to rid himself of the Mark of Cain before it turns him into a monster. Meanwhile, Sam is focused on stopping his brother from going down a dark path, but it soon becomes clear that their goals may not be compatible.

As the episode progresses, the stakes become higher as Crowley, Rowena, and Castiel all become involved in Dean's journey. Each has their own agenda, and it's difficult to tell who can be trusted.

Ultimately, the brothers must confront their biggest challenge yet as they face off against a powerful enemy that threatens to destroy everything they hold dear. Through it all, they must rely on each other and the bonds of family to survive.

Overall, Brother's Keeper is an intense and action-packed episode that ties up many loose ends from the season while setting the stage for what's to come. Fans of Supernatural won't want to miss this thrilling installment.