Elena removes the dagger from Elijah to revive him. Then she delivers the dagger to him to prove that she will not betray him again and she asks Elijah to help her to kill Klaus. Stefan and Damon discover what Elena did and Stefan calls her, but she asks to be alone with Elijah. Damon delivers verbena to Katherine to avoid to be compelled by Klaus. Meanwhile Elijah discloses to Elena that Klaus is his brother and the curse is fake. Klaus possessing the body of Alaric and Stefan tell about the vampires, werewolves and moonstone course to Jenna, but she does not believe in their words. When Elena confirms that everything is true, she realizes that she is the only member of the family that does not know the truth. Elena returns to Elijah and he tells that Klaus is an hybrid of vampire and a werewolf too and he wants to build his own bloodline. Further, only a witch could kill Klaus in the full moon during the transition. Klaus bring the witch Greta and she casts a spell for him to return to his own body.
"Klaus" is a great episode with revelations: Elijah and Klaus are brothers; the moonstone curse is false; Jenna finally learns the truth about supernatural creatures. Elena trusting on Elijah is very stranger. Why does she need Elijah (and not Damon or Stefan) to kill Klaus when he is weakened by Bonnie? My vote is nine.
Title (Brazil): "Klaus"