The sneak peek video released for "The Vampire Diaries" Season 5, Episode 9 titled "The Cell" shows that the favorite bad boy vampire Damon Salvatore (Ian Somerhalder) is in trouble. It looks like the mystery surrounding Dr Wes Maxfield (Rick Cosnett), the secret society and the Augustine vampire will be revealed in the CW TV series' brand new episode.

Credit: YouTube.com/The Vampire Diaries

In the brief video clip, Elena Gilbert (Nina Dobrev) can be seen talking to Aaron (Shaun Sipos) to ask for help and information about his legal guardian, Dr Wes Maxfield, in order to find and save Damon from the doctor's evil plans. Damon has revealed in Episode 8 "Dead Man on Campus" about his dark past comparable to Jesse (Kendrick Sampson) being a lab rat at Whitmore College.

Fans will be able to see another dark period in Damon's life at the time when he became the subject of a series of medical experiments. Additionally, the upcoming episode will have Damon and Elena revealing more shocking secrets from their past.

For Damon, it is the ordeal that he has to go through from his dark past that he decided to keep a big secret for decades. Elena, on the other hand, will discover some disturbing information about the Gilbert family, particularly with her adoptive father and former Whitmore College professor, Grayson Gilbert.

The synopsis for Episode 9 in the Examiner report reads: "Stefan (Paul Wesley) continues to offer Katherine (Nina Dobrev) his support while trying to mask his own pain, until Caroline (Candice Accola) shows up with an unusual form of therapy. After trying to make amends with Caroline, Elena (Nina Dobrev) grows so concerned about Damon (Ian Somerhalder) that she turns to Aaron (Shaun Sipos) for help. Later, when Damon tells Elena about a terrible ordeal in his past that he has kept secret for decades, she shares the disturbing information she just learned about her own family. Finally, Aaron decides on a desperate course of action after a conversation with Dr. Wes (Rick Cosnett)."

"The Vampire Diaries" Season 5, Episode 9 "The Cell" is scheduled to air on December 5, Thursday, at 8 p.m. ET on the CW network.

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