“Teen Wolf” Season 6 is getting seriously dangerous. The pack still isn’t clear on what this fear-causing Big Bad is, but they know that they have another enemy to worry about: a new hunter. Scott realized that the bullet that killed the new hellhound was silver, meaning someone is aiming to kill supernatural creatures without much knowledge. What they don’t realize is that the newbie will have help in episode 13.

“Scott and the others desperately pursue a missing werewolf,” the episode 13 synopsis reveals. When viewers last saw Brett (Cody Saintgnue), he had gotten shot with an arrow by Gerard Argent (Michael Hogan). The veteran hunter and Tamora (Sibongile Mlambo) will continue hunting Brett on “Teen Wolf,” and the pack will be searching for him too.

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In a sneak-peek video, the guidance counselor is worried about just that. She knows that he’ll have more time to find help the longer they let him run, but Gerard says Brett will only grow weaker. He’s still pretty strong, though. He tries to throw the arrow back at Tamora, but Gerard pulls her out of the way. He also lends her a rifle, which sends Brett running. It looks like the hunt for Brett will only get more intense in this installment of the MTV drama.

Watch the video clip from “Teen Wolf” Season 6, episode 13 below:

Having Gerard on the new hunter’s side will make things much more difficult for everyone in this episode, which is titled “After Images.” As Scott (Tyler Posey), Malia (Shelley Hennig) and Liam (Dylan Sprayberry) search, they’ll run into some life-threatening obstacles and figure out Gerard’s bigger plan in “After Images.” Part of his master plan is revealed in the promo video for episode 13.

“We’re building an army to hunt them all,” Gerard says ominously.

Watch the “Teen Wolf” trailer below:

Elsewhere, other allies will be dealing with the dead body that the lacrosse players found in the last episode. The bloody deformed body will end up in the morgue at Beacon Hills Memorial Hospital, so naturally, Melissa (Melissa Ponzio) will be the one trying to get questions answered. However, there’s something about this corpse that’s not normal. She’ll need Chris Argent (J.R. Bourne) to help her. “Melissa and Argent investigate the nature of a strange body,” the episode summary teases.

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In case you somehow forgot, “Teen Wolf” Season 6A included a bit of romance for the parents. After Argent faced off with a Ghost Rider, Melissa ran up and kissed him. That apparently didn’t officially cement their status as a couple. Expect the duo to be a little awkward when they meet up for this investigation.

Also, it’s worth noting that this episode was directed by star Tyler Posey. Though he has been producing for a couple years now, this marks his directorial debut.

“Teen Wolf” Season 6, episode 13, titled “After Images,” airs Sunday at 8 p.m. EDT on MTV.