The Mikaelson Shadow

Klaus Mikaelson's worst mistake was when he returned to New Orleans, following the rumor of that witch. Now, six years later, he was still suffering from the curse placed on him by the New Orleans' witches, a curse that broke him, more than ever, a curse that tore down the walls of his mind and made the king kneel.
The remaining Mikaelson family, now more united than ever, retreated into the shadows, trying to find a way to break their brother's curse before to be too late.
When Elijah hires a young human nurse to take care of Klaus while he, Rebekah, Kol and Katherine, Elijah's wife and Klaus' most reliable ally & best friend, are gone, he doesn't expect Caroline Forbes to be the key to healing.

I'm sorry, my english isn't good.

-Kol is alive.-
-Klaus became a hybrid 500 years ago, but he didn't kill Katherine in ritual, he just turned her. Instead, she works with Mikaelsons.-

Tvd & To