Season 1, Episode 20 The Vampire Diaries "Blood Brothers," the origins of the Salvatore brothers' vampirism are finally revealed through intense flashbacks to 1864. Flashback: The 1864 Origin
In the present, Stefan is consumed by guilt over his past actions and his recent relapse into human blood consumption. He attempts to commit suicide by taking off his sun-protecting ring and waiting for the sun to rise, but Elena eventually convinces him that his life is still worth living. John Gilbert’s Agenda: the vampire diaries season 1 episode 20
However, Episode 20 flips the script by revealing a secret Stefan has been keeping for over a century: Season 1, Episode 20 The Vampire Diaries "Blood
In 1864, Stefan and Damon try to save Katherine from the town’s vampire roundup. the vampire diaries season 1 episode 20