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The CW offers early sneak peek to the upcoming episode of "The Vampire Diaries". In clip 1, Stefan is seen behind the cell and he flashes back to the 1800s when the townspeople were hunting for the vampires. The group's leader is using the compass that becomes the mystery item of the show.

While Stefan is locked up alone, Damon and Elena bond over the tragedy. Elena has been staying inside the mansion while figuring out how to save Stefan. When Elena asks Damon whether it's a problem if she stays there another night, Damon jokingly says, "Yes, you are a complete nuisance."

The episode is called "Blood Brothers" and will air April 29. While Stefan struggles to come to terms with his past, both he and Damon reveal parts of their history to Elena, until she finally learns the truth about how they became vampires. Pearl has an ugly confrontation with Johnathan Gilbert. Damon and Alaric try to find a mysterious invention before Johnathan does. The friendship and flirtation between Jeremy and Anna continue to grow.

• Clip 1

• Clip 2