See what Julie Plec can tease about the second half of The Vampire Diaries‘ fourth season, and the January return episode “After School Special”!

TV Line caught up with showrunner Julie Plec, and she gave some new information about the love triangle, Tyler’s new role and much more.

Speaking about Stefan and his feelings upon finding out about Damon and Elena, Plec warns that, “it’s not going to be pretty. Stefan is heartbroken. He feels incredibly betrayed and angry. We’re going to see a lot of his point of view as we move forward.”

As for Tyler, who suffered the loss of his entire pack of Hybrids as well as his mother, “it’s a setback in that his confidence came from this feeling that he had a place and he had people that were looking to him,” Plec explains. “The question is, how will he rebound from that?”

Klaus did some truly horrific things in the winter finale, but “it’s born from a very human place,” and Plec hints that there’s hope for his character yet. “Klaus will continue to be a very complicated character. Much like Damon in the first couple seasons, when he feels backed up against the wall, he lashes out in very, very destructive ways. It makes it impossible to forgive. And yet, the redemption of Klaus as a character-long arc is something we always talk about.”

In the next chapter of the story, we’ll learn more about Shane’s plan and the mysterious Silas. We’ll also see Jeremy as, “a hardcore, lean and mean vampire-fighting machine over the next couple episodes.”

The returning episode “After School Special” will see Rebekah host “a pretty malicious detention at school,” trapping the characters and forcing uncomfortable truths to come out.

The Vampire Diaries returns January 17, 2013, airing at 8/7c on The CW.