Time is running out to stop the Beast in “Teen Wolf” Season 5B. In episode 19 of the MTV drama, Scott (Tyler Posey) said he’d find a way to save Mason (Khylin Rhambo), but now it’s not clear if that’s even possible. When the Beast returned to human form, it wasn’t as Mason. It was Sebastien (Gilles Marini), the 18th century man who first became the monster. Unfortunately, he is much more evil than Mason. The gang will have to go up against the Frenchman in the “Teen Wolf” season finale, titled “Apotheosis.”

“Loyalties are tested and new alliances forged as Scott and his friends work to stop the Beast before Beacon Hills is razed to the ground,” the episode 20 synopsis reads. Clearly, Sebastien will cause trouble, and it looks like his havoc won’t be limited to when he is in Beast form. In the trailer, he is seen at the police station, but he probably isn’t turning himself in.

Watch the trailer for the “Teen Wolf” Season 5B finale below:

The promo video also shows Malia (Shelley Hennig), who will be in her own battle. Braeden (Meagan Tandy) locked Malia and the Desert Wolf (Marisol Nichols) in the house together. The Desert Wolf wants to kill Malia to take her powers, but will her daughter kill her first?

Another trailer reveals that she isn’t the only pack member in trouble. Lydia (Holland Roden) seems to have a serious neck injury and Stiles (Dylan O’Brien) is seen on the floor with what looks like a blade possibly going through his chest. Watch the second trailer below:

Noticeably absent from the promos is Parrish (Ryan Kelly), but the hellhound appears in the fresco painting that is once again shown in the promos. It seems likely that viewers will actually see the battle in the mural happen in this installment. Showrunner Jeff Davis previously teased that Beacon Hills might not be able to survive that battle.

“The ‘Clash of the Titans’ is the hellhound and the Beast. Should I have said that?” Davis teased to International Business Times in October. “It’s very much what you see in the fresco in the Dread Doctor’s operating theater. And essentially, the whole season is about Scott and his pack and Theo and his pack getting caught between that and seeing if the city or town of Beacon Hills will survive it.”

As if we didn’t have enough questions about episode 20, the title is also a bit confusing. “Apotheosis” can mean the best part of something, which would be fitting for a season finale. However, Merriam-Webster points out that it can also mean a perfect example or “elevation to divine status.” With the kind of supernatural humans in Beacon Hills, it doesn’t seem like any of the possible definitions can be ruled out.

The “Teen Wolf” Season 5B finale airs Tuesday at 9 p.m. EST on MTV.

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