Kill or Be Killed

S2 E5: Tyler learns more about the Lockwood family curse from Mason (recurring guest star Taylor Kinney). Stefan and Damon argue over how to handle Mason. Elena tries to keep Jeremy from becoming more involved with the Lockwood mystery, but Jeremy makes an effort to hang out with Tyler. Mason gives Sheriff Lockwood (recurring guest star Marguerite Macintyre) some startling information, leading to a night of violence, confession and heartbreak.