S3, E15: Elena is frustrated to find that her friends do not agree with her about how they should deal with the Originals' power struggle, and Bonnie and Abby learn that they have an important role to play in a magic ritual. Meanwhile, Elijah gives Stefan and Damon an ultimatum which puts Elena's life at risk, and the brothers turn to Alaric and Meredith for help. However, the path they choose leads to a horrifying decision.