: The episode ends with Klaus bringing Stefan back to Mystic Falls in the back of a truck, determined to find out what Stefan is still "holding onto" from his old life. Critical Reception & Key Quotes
: Gloria discovers through a vision that Elena is the one wearing the necklace. She realizes Elena—the doppelgänger Klaus needs—is still alive, but before she can tell Klaus, Katherine kills her to protect the secret. Episode 4: Disturbing Behavior
The title primarily refers to the fourth episode of The Vampire Diaries ' third season (and the series' 48th episode overall). Originally aired on October 6, 2011, it was directed by Wendey Stanzler and written by Brian Young. Plot Overview : The episode ends with Klaus bringing Stefan
Reviews of the episode highlight a mix of character dynamics and pacing. While some critics noted and "characters stuck in the same locations", others praised the dynamic between the Originals . The title primarily refers to the fourth episode