Vampire Diaries season 6: Damon searches for his mother Lily as Caroline flips her humanity; Watch episode 16 online

Vampire Diaries season 6 will return with episode 16 titled The Downward Spiral and as per the official synopsis, Damon Salvatore will learn about his mother.

In order to solve the riddle of his mother Lily's whereabouts in the prison world and release her, the elder Salvatore vampire seeks the help of Bonnie who just escaped the creepy Other Side.

Kai offers Damon more information about the prison world, which leads to some devastating news about Lily's past.

Caroline, meanwhile, flips her humanity in order to deal with Stefan's rejection and the pain of losing her mother.

Click here to watch episode 16 of TVD online. The official synopsis of episode 16 reads:

"After shutting off her humanity following the death of her mother, Caroline gives her friends an unexpected ultimatum. Not knowing how to handle the new Caroline, Stefan's attempt to intervene sets off a dangerous chain of events, leaving him and Elena (Nina Dobrev) in a race against the clock. Meanwhile, after seeking answers from Kai about the prison world, Damon's world is turned upside when he learns some devastating news about his mother Lily. Elsewhere, Enzo (Michael Malarkey) finds himself becoming increasingly intrigued by Sarah Salvatore (Tristin Mays), and Bonnie begins to struggle with the effects of being back in the real world."

Ian Somerhalder will debut as director for the next episode of TVD. More will happen when The Vampire Diaries season 6 returns this Thursday, 12 March, on CW network.