Vampire Diaries season 2 episode 4 spoilers about Katherine and George Lockwood ( new casting ). It reveals George's identity.
GEORGE LOCKWOOD, a handsome and confident Confederate Soldier of 19.
Katherine meets George and asks him for help. No details. He's aware that she's a vampire and tells her that it's in his blood to hate her. He's a werewolf. It's not a full moon yet so he can't hurt her. He agrees to talk to her. He knows Salvatore brothers.
Source: Spoilers Guide