The next episode for 'Teen Wolf' Season 4 will surely have a lot of twists and turns as characters are set up to face another mystery.

Next week's episode entitled "Weaponized" introduces the students at Beacon Hills High to an environment that they've never encountered before. Beyond the revelation that Lydia is a banshee, a new mysterious event will surface that is sure to affect the characters of the series.

A latest teaser video released for the upcoming episode unleashes a crisis on the people in the community and imposes a biological threat that forces the CDC to quarantine the area. What's more, is that this time around, the crisis on the show risks the livelihood of the entire population, as it's a dangerous contagion.

Additional spoilers for the show were revealed during the San Diego Comic-con recently and mentioned that there will be deaths surrounding the main characters in the remaining episodes of 'Teen Wolf' Season 4. Also, Jeff Davis himself, the executive producer, revealed that assassins will appear in Beacon Hills.

"I can say that the assassins, their success rate gets higher and higher. So things get pretty bad and pretty bleak... People have to risk their lives for each other." Davis said.

Another mystery set to unfold in Season 7 involves the recent revelation about Lydia Martin, and the fact that her secret has been discovered. Fans expect to know how or why she's a banshee. Aside from that, 'Teen Wolf' characters Stiles and Malia will be dragged into a situation that compromises their relationship.

Watch the 'Teen Wolf' Season 4 Episode 7 promotional video below: