answers: Season two
context: mother Hayley. In the season three episode, "Before Sunset", Klaus is temporarily "killed" by the Salvatores and Tyler Lockwood. He tries to kill Elena by draining her of all her blood in order to kill two birds with one stone; (1) have a supply of her blood with which to create a hybrid army, (2) kill the vampire form of the vampire-hating Alaric Saltzman, who desires to kill Klaus, all other vampires and whose life is tied to Elena's by the witch Esther. Subsequently, Elena's friends neutralize Klaus in order to protect her. Instead of staking him, which could potentially </s> Original Witch", though she was not the first witch in the world. This was a reference to the fact that she was the witch who was a part of the Original Family. Esther was murdered by Klaus in the early 11th century, because she used her powers, and those of some other fellow witches, to suppress his werewolf abilities and bind them to the moonstone through the use of a curse, and for making him the target of Mikael's hatred through her affair. Esther comes back to life in the 21st century, when she was awakened by Bonnie and Abby </s> The Vampire Diaries (season 2) The Vampire Diaries, an American supernatural drama, was officially renewed by The CW for a full 22-episode season on February 16, 2010. The first episode premiered on September 9, 2010, at 8 p.m. ET. The season picks up immediately after the events of the season one finale. All the series regulars returned. Season two focuses on the return of Elena Gilbert's (Nina Dobrev) doppelgänger, Katherine Pierce, the introduction of werewolves, the sun and moon curse, and the arrival of the original vampires. Tyler Lockwood's (Michael Trevino) uncle, Mason Lockwood (Taylor Kinney), arrives in town searching
question: when are the originals introduced in the vampire diaries