Spoiler From TV Guide - 23rd April 2013

It's high school graduation! But who has time to think about that when Silas must be stopped? But can he be? "When the season is over, it's pretty clear that they haven't seen the last threat from this guy," executive producer Julie Plec teases. Elsewhere, Tyler's fate rests solely in the hands of Klaus, who will decide whether to let Tyler and Caroline be happy. Most importantly, someone will ingest the cure, but the ramifications will spill into next season. Could that have something to do with the major shakeup of the Damon-Elena-Stefan triangle that's to come? "The end of the season will be changing the dynamic of the three drastically and sending each individual party off on a very new and distinct future," Plec says.