The Truth Can't Stay Hidden Forever (TO/TW)

Stiles is a vampire. In fact he's name is Mieczyslaw Mikaelson and he is an Original vampire.
His past is one of the things he regrets the most, he was a ruthless monster, and let's not forget about him being a ripper. Eventually he broke away from all that and came to Beacon Hills to start a clean slate, he only drinks from animals and no one knows about him being an original or even a supernatural creature and that's the way he would like to keep it.
But Klaus decides he wants his brother back, the old Stiles. Klaus goes to Beacon Hills himself to bring Stiles back but he refuses.
Klaus doesn't take no for an answer, and soon Beacon Hills will know what having two originals staying feels like.
Will Stiles go back to his old ways?
Will the pack find out?
What will Klaus go to, to get his brother back?