20 episodes • June 29, 2015 - March 8, 2016

On the eve of Senior Year, Scott and his friends find themselves facing the possibility of a future without each other, a next phase of their lives that might take them in different directions despite their best intentions. Little do they know that outside forces are already plotting to break the pack apart long before they ever see graduation; new villains that use a combination of science and the supernatural for a malevolent and mysterious purpose that will eventually pit Scott and his friends against their greatest enemy yet.

20 episodes

1. 

   #1

   Creatures of the Night

   42 min • Jun 29, 2015 (11 years ago)

   On the eve of senior year, Scott and his pack deal with the arrival of a new enemy and the return of an old friend.

2. 

   #2

   Parasomnia

   42 min • Jun 30, 2015 (11 years ago)

   Stiles is suspicious of a new classmate; and Lydia helps a student with night terrors.

3. 

   #3

   Dreamcatchers

   42 min • Jul 6, 2015 (11 years ago)

   Scott tracks a new shapeshifter that's threatening Stilinski; and Malia receives information about her mother.

4. 

   #4

   Condition Terminal

   42 min • Jul 13, 2015 (11 years ago)

   Stiles works on tracking down a fugitive; Liam tries to be Mason's wingman at a nightclub.

5. 

   #5

   A Novel Approach

   42 min • Jul 20, 2015 (11 years ago)

   In hopes of learning more about the Dread Doctors, the pack goes into Eichen House.

6. 

   #6

   Required Reading

   42 min • Jul 27, 2015 (11 years ago)

   After following Dr. Valack's advice, Scott and the others begin to experience strange things.

7. 

   #7

   Strange Frequencies

   42 min • Aug 3, 2015 (11 years ago)

   Stiles is suspicious about a new girl showing up and what her intentions are. Scott's plans to protect the newest victim are derailed when The Dread Doctors attack.

8. 

   #8

   Ouroboros

   42 min • Aug 10, 2015 (11 years ago)

   Scott and Malia get help to try to find Hayden and Liam. Deaton discovers something horrific about the dread doctors. Hayden and Liam will be faced with a life and death situation.

9. 

   #9

   Lies of Omission

   42 min • Aug 17, 2015 (11 years ago)

   Scott finds himself turning to an unlikely ally for help. Stiles and Lydia attempt to find out the truth about Parrish.

10. 

    #10

    Status Asthmaticus

    42 min • Aug 24, 2015 (11 years ago)

    With both lives and friendships on the verge of being destroyed, Scott and his pack face their greatest enemy yet.

11. 

    #11

    The Last Chimera

    42 min • Jan 5, 2016 (10 years ago)

    Scott and Stiles try to learn what is behind the mysterious infection that is killing the town sheriff.

12. 

    #12

    Damnatio Memoriae

    42 min • Jan 12, 2016 (10 years ago)

    Even without the support of his pack, Scott considers what the Dread Doctors' success means for Beacon Hills.

13. 

    #13

    Codominance

    42 min • Jan 19, 2016 (10 years ago)

    Kira and her mother make a journey to help Kira deal with her dark side; Lydia is surprised at Eichen House.

14. 

    #14

    The Sword and the Spirit

    42 min • Jan 26, 2016 (10 years ago)

    As Scott tries to put his pack back together, Malia and her new ally set out to rescue Deaton from The Desert Wolf.

15. 

    #15

    Amplification

    41 min • Feb 2, 2016 (10 years ago)

    Upon learning that Lydia is in danger, Stiles makes a plan to break her out of Eichen House; Theo has his own plans.

16. 

    #16

    Lie Ability

    42 min • Feb 9, 2016 (10 years ago)

    While trapped in Eichen House with Theo and the Chimera pack, Scott tries to rescue Lydia before time runs out.

17. 

    #17

    A Credible Threat

    42 min • Feb 16, 2016 (10 years ago)

    Scott and his pack use a charity lacrosse game in a deadly gambit to figure out the identity of the Beast.

18. 

    #18

    Maid of Gévaudan

    42 min • Feb 23, 2016 (10 years ago)

    Scott, Stiles, Lydia, Malia, and Liam are trying to figure out how to defeat the Beast of Gévaudan that the Maid of Gévaudan, Marie-Jeanne Valet, faced in 1765. As Gerard Argent, recounts Valet’s story to Scott’s pack in hopes they can deduce the creature’s weaknesses.

19. 

    #19

    The Beast of Beacon Hills

    42 min • Mar 1, 2016 (10 years ago)

    With the identity of the Beast finally revealed, Scott and his friends are in a race against time to stop The Dread doctors from implementing their final plan.

20. 

    #20

    Apotheosis

    42 min • Mar 8, 2016 (10 years ago)

    Loyalties are tested and new alliances forged as Scott and his friends work to stop the Beast before Beacon Hills is razed to the ground.