From the EW:
SPOILERS
Ex-Trauma EMT Taylor Kinney is joining the cast of Vampire Diaries in the recurring role of Mason Lockwood, younger brother of late Mayor Lockwood, sources confirm.
Described as Tyler’s (Michael Trevino) “cool” uncle, Mason is sexy and athletic (duh) and possesses an easygoing charm. Though he has more control than his nephew, he can “flip in an instant” if crossed.
Kinney will make his first appearance in Diaries’ second-season premiere on Sept. 9.