Ep 14. The Executioner's Song

In Supernatural season 10 episode 14, titled "The Executioner's Song," Sam and Dean are introduced to a young girl, Josie Sands, who is in desperate need of their help. Josie had been kidnapped by a group of vampires, but they did not kill her. Instead, they turned her into a vampire, and now she is struggling to control her thirst for human blood.

Meanwhile, a mysterious figure known as the "Executioner" is killing people throughout the city, leaving Sam and Dean to investigate the case. They believe that the Executioner is a rogue angel, but they cannot be sure. As they continue their investigation, they discover that the Executioner is actually a former hunter named Henry who had been possessed by an angel.

Sam and Dean enlist the help of their friend, Castiel, to try and exorcise the angel from Henry's body. However, the angel is too powerful, and they are unable to exorcise him. While Castiel and Dean continue to search for a solution, Sam stays behind to protect Josie from the vampires who are hunting her.

As the Halloween night approaches, the Executioner becomes more daring and begins targeting innocent victims at a costume party. Sam and Dean rush to the party to try and stop him, but they are too late. The Executioner has already killed several people, and he has set his sights on Sam and Dean.

In a dramatic and intense battle, Sam and Dean face off against the Executioner. With the help of Castiel, they are able to overpower the Executioner and exorcise the angel from Henry's body. However, the victory is bittersweet, as they must also say goodbye to Josie, who had given in to her thirst for blood and disappeared into the night.

As the episode comes to a close, Sam and Dean reflect on the events of the night. They realize that despite their victories, they are still facing an uncertain future. With the darkness closing in around them, they must continue to fight for what is right, no matter the cost.