A NEW THREAT ON THE HORIZON — After realizing the downward spiral he was on, Damon (Ian Somerhalder) decides he’s going to turn over a new leaf and that his actions moving forward will do right by Elena. Lily (guest star Annie Wersching) prepares for the arrival of a special figure from her past, while Enzo (Michael Malarkey) stands by not sure what to expect. Elsewhere, at Caroline’s (Candice King) urging, Stefan (Paul Wesley) comes face-to-face with Valerie (guest star Elizabeth Blackmore) and learns some upsetting details about her past, while Enzo and Bonnie (Kat Graham) find themselves at odds when they’re forced to fend off a violent threat. Finally, when Bonnie learns some disturbing information involving the Phoenix stone, she is forced to confront Alaric (Matt Davis). Kellie Cyrus directed the episode written by Rebecca Sonnenshine (#705).