Ep 1. Black

In the first episode of the tenth season of Supernatural, titled "Black," the Winchester brothers return to their hometown of Lawrence, Kansas to investigate a series of mysterious murders that appear to be connected to an old, abandoned church. As they delve deeper into the case, they discover that the church was once home to a powerful demon named Abaddon, who had been locked away by their grandfather and fellow hunter, Henry Winchester.

With Abaddon's release, the brothers must confront her and her army of loyal followers, who are determined to wreak havoc upon the world. Along the way, they encounter a new ally, Cole Trenton, who is on a personal mission to exact revenge on a demon who killed his father.

As they fight to stop Abaddon's plans, the Winchesters face their own demons and struggle to come to terms with the recent loss of their friend and ally, Kevin. Meanwhile, Castiel finds himself in a dangerous situation as he tries to help a young girl who has been possessed by a powerful angel.

The episode is filled with intense action, suspenseful moments, and a few unexpected twists and turns. It sets the stage for what promises to be a gripping season as the Winchesters continue to fight against the forces of evil in an increasingly dangerous and unpredictable world.

Overall, "Black" is a thrilling start to the tenth season of Supernatural, with plenty of familiar faces and new challenges for the Winchesters to overcome. Fans of the show will not be disappointed by this episode, and it is sure to hook new viewers who may be joining the series for the first time.