'Teen Wolf' Season 3B Spoilers: Serial Killer William Barrow Makes First Appearance in Episode 15 Titled 'Galvanize' [WATCH PROMO VIDEOS]

For the upcoming "Teen Wolf" Season 3B Episode 15 titled "Galvanize," a promo video has been released to give fans a preview on the darkness heading towards Beacon Hills. Actor Doug Jones will be making his first appearance in the MTV supernatural series as the scary serial killer William Barrow.

"Wolf Watch" exclusively aired the brief promo video filled with the exciting scenes for the next episode. In the promo video, William Barrow can be seen creating terror as he sparked a live wire on the fence and hit Scott's (Tyler Posey) head to knock him out.

Additionally, the promo video teased about the potential Scott-Kira romance. The scenes showed more awkward moments between the two characters like Kira (Arden Cho) dropping her things at the locker area with Scott and Stiles (Dylan O'Brien) nearby and Kira's dad inviting Scott over at their house making the teenage girl give a forced smile and welcome him awkwardly.

There is also the uncomfortable moments of Stiles suddenly asking Scott if he likes the new transfer student and Kira declaring that she does not want to go on a date. According to the Cartermatt.com report, the new girl in town brings a different kind of energy particularly to Scott with her enigmatic personality ringing the possibility that the two characters will take their relationship to the next level.

The Hypable spoiler report offers an extended look on the next episode revealing more details about the serial killer. Lydia (Holland Roden) confessed that she has been hearing a buzzing sound as well as voices and the noises are getting louder and louder as days go by.

Credit: ETOnline/Hypable

Meanwhile, Stiles thinks that the serial killer, who escaped the hospital and did some serious damage, was there to kill someone. Some of the scenes shown before the video clip ended include Peter (Ian Bohen) telling Derek (Tyler Hoechlin) that what he is about to do will hurt, Isaac (Daniel Sharman) locked up in a room and the banshee Lydia screaming.

"Teen Wolf" Season 3, Episode 15 "Galvanize" is scheduled to air on Monday night, January 20, at 10 p.m. on MTV.

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