Overview
"For Whom the Bell Tolls" is the fourth episode of the fifth season of the American series The Vampire Diaries, and the series' 93rd episode overall. "For Whom the Bell Tolls" was originally aired on October 24, 2013, on The CW. The episode was written by Brett Matthews and Elisabeth R. Finch and directed by Michael Allowitz.
Plot
After Stefan (Paul Wesley) lost his memory, Damon (Ian Somerhalder) tries to help him remember. He remembers the date and where he is, but he cannot remember who he is, who the people are around him, or even that he is a vampire. Damon presents Stefan with his diaries to jog his memory with, but he still has no recollection of his past.
Elena (Nina Dobrev) meets the two of them later to find out that Damon did not tell Stefan about her yet. Stefan is conquered by his thirst and follows a waitress but Damon gets there in time before he hurts her. After the incident, they take Stefan to the family crypt where there are fewer people around. Damon gets a phone call from Jeremy (Steven R. McQueen) and leaves, leaving Stefan alone with Elena.
Elena tries to help Stefan remember by taking him to the school where they reenact the moment they met. Stefan still cannot remember, so Elena takes him to the bridge where he saved Matt's (Zach Roerig) life and she became a vampire. He does not recall any of the events. The two of them come very close, but before they kiss, Elena tells him that she is with Damon, something that makes Stefan angry and leaves.
From Wikipedia (CC BY-SA 4.0).