Watch The Vampire Diaries Season 5 Episode 10 - TVD S5 E10 Online Damon realizes Elena is at risk and enlists Stefan's help to search out her. The brothers pay a go to to Aaron, and Damon shocks Stefan by revealing his first-hand data of Aaron's family. In an attempt to stop Damon, Dr. Wes unleashes his secret weapon, forcing Damon to cope with a part of his past he thought was gone without end, in addition to the implications of his decades-lengthy plan for revenge. In the meantime, Elena is horrified by Dr. Wes' confessions concerning the dark history of Whitmore College and his personal ultimate goal. Finally, a frantic Katherine turns to Matt for help, until she realizes that Nadia would be the one who can solve her problem.