THE VAMPIRE DIARIES Season 3 Episode 4 : Disturbing Behavior
In Chicago, Klaus uses Gloria the witch to find out why his hybrids aren't turning out the way he planned and Gloria discovers that Stefan is hiding the fact that the doppelganger is still alive. She tortures Stefan, but Katherine saves him. Back in Mystic Falls, Damon changes his attitude and kills Alaric but Alaric comes back to life. Damon then tries to kill Bill. Caroline saves her father by giving him her blood and has a confrontation wit...