Assassins abound in this year’s Teen Wolf season 4, and another one is on the way in next week’s brand new episode.

In a spoiler chat with EW, Executive Producer Jeff Davis hints at what’s coming up on Teen Wolf season 4, episode 7, “Weaponized.” And it isn’t pretty.

In “Weaponized” we’ll meet another assassin who will be trying to cross names off the Dead Pool, the hit list of supernatural creatures put out by the mysterious Benefactor. The new assassin will be called The Chemist.

Considering “Weaponized” will be a episode set in the school due to a mysterious outbreak, we assume The Chemist will be the person behind the sickness that invades Beacon Hills. In the promos for next week’s episode, we saw Mrs. Martin calling the Center for Disease Control after seeing the disgusting lesions on Coach Finstock’s back.

The episode won’t just be about the outbreak, however. According to Davis, Malia and Stiles are going to hit some rough patches when we see “a crucial moment between Stiles and Malia that may threaten to destroy their relationship.”

That crucial moment will probably be when Malia discovers that Stiles and her friends have been keeping secrets from her. In season 3 we learned that Mr. Tate is not actually Malia father. Instead, Peter is her biological parent. Peter is aware of this information, and Malia is still in the dark. But not for long.

Teen Wolf season 4, episode 7, “Weaponized,” will air on Monday, August 4 at 10 p.m. ET on MTV.

Are you looking forward to more secrets being revealed on ‘Teen Wolf’?

If you can’t wait until the next episode airs, be sure to catch up with all the news about Teen Wolf that came out of this year’s San Diego Comic-Con. We found out that the show will have a 20-episode run for season 5, we got a mid-season trailer, we broke down the highlights of the panel, and we even talked to the cast to bring you spoilers about upcoming episodes!