Unbelievably, Rebekah still wasn’t satisfied, but Klaus had seen more than enough. He reached them at last, catching Rebekah by her knot of hair, stiff with salt water, and dragged her head back. He bit her exposed throat, his fangs tearing through skin to leave a bloody hole in the center of her windpipe.

It wouldn’t kill her, but for the moment she lay limp on her back, bobbing on the waves like driftwood. He only needed time to get Vivianne away, to go someplace where his lunatic sister wouldn’t think to look for them. It had been foolish to come to the cabin at all, but he wouldn’t make the same mistake twice.

He carried Vivianne gently, cradling her against his chest. She stared up at him, her black eyes as deep as the sea itself.

They were less than halfway to the cabin when he heard the pattern of the crashing waves change, some disturbance in their rhythm that alerted him just in time. Klaus set Vivianne down carefully on her feet and turned to meet his sister’s renewed attack. Her throat was still a bloody mess, and she couldn’t speak. Her dark blue eyes were riveted on Vivianne, as if her only purpose in life were to destroy what he loved most.

- The Originals: The Loss, Chapter 16