A lot of secrets have already been revealed even before the midseason finale of "Teen Wolf" season 5 is aired, but the shocking surprises will still unfold in the upcoming episode of MTV's supernatural drama. 

In the ninth episode of the season titled "Lies of Omission," viewers of the show discovered that it was Stiles (Dylan O'Brien) who killed Donovan (Ashton Moio), which led Scott (Tyler Posey) to kick him out of their pack.

For the upcoming midseason finale titled "Status Asthmaticus," Stiles and Scott's once solid friendship is still unrepaired, and it could greatly affect the safety of the pack. 

According to the official synopsis of the episode, "With both lives and friendships on the verge of being destroyed, Scott and his pack are going to face their greatest enemy yet." 

This could mean that Scott is not yet ready to forgive Stiles. But how long will he stay mad at his friend, especially since his life and the rest of the pack could be in grave danger, and Stiles' power can help take down the enemies? 

Meanwhile, Ryan Kelley, the actor who portrays the role of the ever suspicious Parrish, talked to Hollywood Life to reveal more information about his character. Since the start of the season, Parrish's real identity had been hard to distinguish. But according to Kelley, the big reveal will come soon.

"It's coming, I can tell you that," he said. "But it seems like every time you see Parrish on screen, you just get more questions rather than answers." 

Kelley also admitted that even Parrish has no idea of what he is doing.

"I don't even think he remembers it. I don't think Parrish would knowingly allow himself to be out in public if he was potentially a threat to other people, especially people he cares about," he added. 

He also talked about Parrish's friendship with Lydia (Holland Roden), saying, "Whether it's more romantic or just friendship, that is still unknown."  

The summer finale of"Teen Wolf" season 5 airs Monday, Aug. 24, on MTV.