We then cut to Gilbert Gables, where you already know what happens, so let's fast forward. As Kol goes up in flames, Klaus arrives at the doorway, just in time to watch his brother die, so he cries us into commercial.
After the break, Klaus reacts as you'd expect. Elena tries to excuse it by saying they had no choice, as Kol was trying to cut off Jeremy's arm. It's true enough, but Klaus already heard from Kol that the Gilberts were trying to kill him, and he knows they had to invite him inside in the first place. Clearly, it was a trap. Klaus screams that he wanted to take care of Kol on his own terms. Now he plans to burn the house to the ground and when the Gilberts try to run, he'll kill them without blinking. Jeremy says if Klaus kills them, he'll never get to the cure and won't be able to make any more hybrids. Klaus doesn't even care about that. He planned on killing them all as soon as they dug up the cure, but now he'll watch them burn instead. His rant is cut short by Bonnie who magically disables him. She orders Jeremy to invite Klaus in. Once Klaus crosses the threshold, Bonnie slows him again and orders the Gilberts into the living room. When Klaus follows and tries to get to them, he's trapped inside a mystical barrier. Jeremy grabs the Perma-Son of White Oak stake from Kol's corpse and runs to the door with Elena. As Bonnie surveys her jail spell, Klaus tells her she can't do this to him. Bonnie brags that he has no idea what she can do. As the threesome leaves, Klaus screams that he will hunt them all 'til their end.
Back at Rebekah's we find her reacting to the news that Kol is dead. Stefan pleads the Gilberts' case -- Kol left them no choice once he targeted Jeremy. He also reminds her that Kol was ready to stake her. Rebekah is incensed that Stefan knew all night what was going on, but Stefan softens her up by reminding her that now she can have the cure, and have and be what she wants. "Everyone deserves a second chance, right?" Rebekah: "Why would I trust you?" Stefan doesn't know. He could give her his word, but she's going to have to take a leap of faith.