IMPACT x Nightline: On the Brink

When teenager Scott McCall (Tyler Posey) is convinced by his best friend, Stiles (Dylan O'Brien), to join a search in the woods for a missing body, something comes out of the darkness to take a bite out of his side, changing his life forever.

Not aware that he has become a werewolf, Scott (Tyler Posey) must deal with hunters trying to catch him, another werewolf (Tyler Hoechlin) and the pressures of normal teen life, all while trying to get a second date with Allison (Crystal Reed).

Scott's (Tyler Posey) first date with Allison (Crystal Reed) ends up in confusion and turns into a dreaded "group date." Meanwhile, a mystery animal attack has Sheriff Stilinski (Linden Ashby) and the rest of Beacon Hills on the lookout.

A new hunter in town puts Derek's life in danger, forcing him to make reluctant allies out of Scott and Stiles. Scott tries to survive dinner with Allison's father while Stiles watches over a mortally wounded Derek.

A new animal attack raises more questions among authorities. And when Scott (Tyler Posey) and Allison (Crystal Reed) skip school unannounced, Derek (Tyler Hoechlin) must deal with the ever more aggressive werewolf hunters on his own.

Scott comes up with ways to control the transformation in order to be with Allison. Derek continues trying to make an ally of Scott in both his battle with the hunters and in his goal to find a mysterious figure.

Trapped in the high school at night, Scott and his friends face both questions and suspicions among each other and the threat of attack from a powerful werewolf trying to get in.

With Derek on the run from Stilinski and his Sheriff's department, Stiles must help Scott face his second full moon as a werewolf while Jackson takes advantage of complications in his relationship with Allison.

Jackson reaches a dangerous revelation regarding Scott. His actions begin to threaten not only Scott's life, but his own. Allison begins to question the strange behavior in her family.

With startling revelations weighing in on him, Scott (Tyler Posey) finds himself scrambling to protect the people he loves, including Allison (Crystal Reed) who begins to follow clues left by her Aunt Kate about her family history.

While struggling with family secrets, Allison (Crystal Reed) focuses on the Winter Formal dance. Meanwhile, as the tensions between werewolves and hunters rise to a boiling point, Scott (Tyler Posey) struggles to protect both friends and enemies.

In the season finale, Scott McCall (Tyler Posey) discovers one last clue which allows him to enlist both friends -- and even a previous enemy -- in order to stop the mysterious killings and win back Allison (Crystal Reed), the girl he loves.