Creatures of the Night
directed by: Russell Mulcahy Air Date: June 29, 2015

Scott, Stiles, Lydia, Kira and Malia prepare for their senior year. Sheriff Stilinski is threatened by a teenage delinquent named Donovan. Kira comes back to Beacon Hills after spending the summer in New York. Stiles and Malia are continuing their search for Malia’s biological mother, the Desert Wolf, while Stiles is struggling with the fear that he will lose his high school friends when they all go to college. A strange, mutated werewolf named Belasko hunts down Scott, intending to steal his Alpha power. Scott and Kira are able to fight off Belasko with the help of another Beta werewolf, who introduces himself as Theo, an old friend of Scott and Stiles. Theo says that he’s come back to Beacon Hills to join Scott’s pack. Belasko is later executed by his masters, the Dread Doctors. In a flash-forward, Lydia is being held in Eichen House; she’s questioned by Dr. Valack, and says that her friends are all going to die.


Parasomnia
directed by: Tim Andrew Air Date: June 30, 2015

Deaton informs Scott that Belasko’s claws were actually the talons of a harpy eagle, and warns him that someone may be trying to change the rules of their supernatural world. Stiles investigates Theo, as he’s convinced that Theo is up to no good. Liam reveals his true nature as a werewolf to his best friend Mason, and tells him about the supernatural world. Lydia and Parrish try to help a girl named Tracy, who has been suffering from hallucinations and night terrors. Tracy later wanders into the lair of the Doctors, who inject her with a serum that turns her into a werewolf.


Dreamcatchers
directed by: Russell Mulcahy Air Date: July 6, 2015

Tracy goes on a killing spree, brutally murdering her father and her psychiatrist. Liam, Mason and Brett discover that Tracy was buried alive in the woods and dug her way out of the ground. Lydia and Kira figure out that Tracy is still trapped in a night terror and thinks that she’s still asleep. Scott, Stiles and Malia bring Tracy to Deaton at the vet clinic, where Tracy grows a tail and is revealed to be a Kanima. She paralyzes Scott, Stiles, Deaton and Malia and escapes, breaking through a barrier of mountain ash with ease. Tracy then goes after Lydia’s mother at the police station; during the resulting fight, Kira unleashes her Kitsune powers and manages to cut off Tracy’s tail, but Lydia is badly injured. Malia arrives and manages to subdue Tracy, but the Doctors immediately appear and kill Tracy in front of Malia.


Condition Terminal
directed by: Bronwen Hughes Air Date: July 13, 2015

In a flashback, Parrish tells Lydia about a dream where he carries a body to the Nemeton before setting himself on fire. The Doctors abduct Donovan and transform him into a supernatural creature, who Theo is working with. Lydia undergoes surgery in the hospital, and asks Parrish to teach her how to fight. Deaton informs Scott that Belasko was a werewolf-Garuda hybrid, while Tracy was a werewolf-Kanima hybrid. They were both made artificially, explaining why Tracy was immune to mountain ash: someone is creating hybrid supernatural creatures. While being Mason’s wingman at a nightclub, Liam argues with a girl named Hayden, while another Chimera, Lucas, tries to seduce Mason. Scott, Kira, Liam, and Brett manage to subdue Lucas. Kira loses control and attempts to kill Lucas, but Scott stops her. The Doctors appear and kill Lucas themselves, stating that he was a failure. Malia discovers a book in Tracy’s bedroom called “The Dread Doctors”, featuring pictures of the Doctors on its cover. Parrish takes Lucas’s body to the Nemeton in a trance and sets them both ablaze. Elsewhere, Stiles is attacked by Donovan, who has been fully transformed into a Chimera.


A Novel Approach
directed by: Tim Andrew Air Date: July 20, 2015

Donovan, who is revealed as a wendigo-lamprey hybrid, chases Stiles into the school library, where Stiles accidentally kills him in self-defense. Parrish steals the bodies of Tracy and Donovan, and takes them into the woods in another trance. Scott overhears Kira whispering in Japanese in her sleep. Malia shows the book that she found to the others, and Scott discovers that it is dedicated to Dr. Valack, a three-eyed inmate at Eichen House. Scott, Kira, Stiles, and Lydia go to Eichen House. Stiles and Lydia question Valack, who reveals that he wrote the book under an assumed name to chronicle what happened the last time the Doctors came to Beacon Hills. Kira’s electric power goes haywire, knocking out the power to the asylum, and disrupting the electromagnetic currents that are part of its supernatural security system. The Doctors enter the asylum, attack Valack, and surgically remove his third eye. Malia has a flashback while driving with Theo, and discovers that the Desert Wolf caused the car crash that killed her adopted mother and sister. An injured Valack uses a recording of Lydia’s banshee scream to shatter the glass wall of his cell.


Required Reading
directed by: Alice Troughton Air Date: July 27, 2015

Sheriff Stilinski discovers eight large holes on the lacrosse field, suggesting that the Dread Doctors have created eight new Chimeras. Parrish begins teaching Lydia how to fight. Liam attempts to make things up to Hayden. The group begins reading Valack’s book, but Kira has difficulty reading it. Mason later explains to her that it is because Kitsunes are confused by “language tricks.” Theo records Kira’s whispering in her sleep, and he later informs Scott that what she has been saying translates to “I am the messenger of death.” Scott has an asthma attack at the high school. One of the new Chimeras, a boy named Josh, enters the school basement, and chews through the power lines, before making his way to the hospital roof. Scott, Stiles and Lydia all experience traumatic visions because of their exposure to the book. Liam discovers that Hayden is a Chimera. In the hospital, Scott and Malia are attacked by the Pathologist, one of the Doctors, but they manage to escape. Meanwhile, Stiles goes to the roof of the hospital during a hallucination. Josh, the new Chimera, attacks Stiles, but Theo rescues him and kills Josh.


Strange Frequencies
directed by: Russell Mulcahy Air Date: August 3, 2015

Theo convinces Stiles to help him conceal the truth about Josh’s death. Hayden is attacked by the Doctors, but Liam rescues her and takes her home. However, she then transforms into a werewolf. Mason befriends Corey, Lucas’s ex-boyfriend, and discovers that Corey is also a Chimera. Kira’s mother, Noshiko, warns her that Kira’s “inner fox” is fighting her for control. Melissa McCall and Sheriff Stilinski discover that the Chimeras had all previously received organ transplants. Theo and Stiles stake out the vet clinic to find out who is stealing the dead Chimeras. Scott, Lydia, Malia, Liam, and Parrish set up a trap in the high school, planning to protect Hayden and capture one of the Doctors. Kira disappears from her house. Meanwhile, Parrish slips into another trance after seeing a hallucination of Lydia. He goes to the vet clinic, knocks Stiles and Theo unconscious, and steals Josh’s body. The Doctors enter the high school, subdue Scott, Lydia and Malia using illusions, and abduct Liam and Hayden. Melissa finds a dead Chimera girl in her house, who has been impaled by Kira’s katana.


Ouroboros
directed by: David Daniel Air Date: August 10, 2015

Deaton investigates the Doctors, but is confronted by the Desert Wolf. Kira is arrested for the murder of the Chimera girl, but her father confesses to the crime to protect her. The Doctors begin experimenting on Liam and Hayden. Scott accesses Corey’s memories and discovers that the Doctors took him to a water plant. Liam and Hayden meet another Chimera with amputated wings. Zach explains that the Doctors kill their failed Chimeras when they start bleeding mercury. Scott, Malia, and Mason go to the water plant to rescue Liam and Hayden but fail. Theo and Lydia discover that Liam and Hayden are being held in the abandoned house where Belasko first appeared. Kira manages to read Valack’s book and discovers that the Doctors experimented on her the night she first came back to Beacon Hills. At the hospital, Parrish goes into another trance and steals the female Chimera’s body. Kira decides to leave Beacon Hills with her family until she can understand what the Doctors did to her. Stiles and Lydia find out that Parrish is the person stealing the bodies.


Lies of Omission
directed by: Tim Andrew Air Date: August 17, 2015

Scott struggles with the return of his asthma. Theo asks the Doctors to leave Hayden alive. Hayden begins bleeding mercury, while Corey begins vomiting blood and mercury and is taken to the hospital. Theo tells Scott that Stiles murdered Donovan, leaving out that it was in self-defense. Corey tries to escape the hospital, but he is found and killed by the Surgeon. Lydia and Parrish find the Nemeton, where Parrish has left the dead Chimeras. Parrish is horrified, and tells Lydia that in his dream, there were hundreds of bodies. Theo lies to Sheriff Stilinski, claiming that he killed Donovan in self-defense. Liam and Hayden decide to go on the run, but they are confronted by the Doctors. Scott, Theo, and Liam fight them, while the third Doctor injects Hayden. Parrish locks himself in a cell at the police station. Scott confronts Stiles at the vet clinic, and they fight over Stiles killing Donovan. Hayden’s condition begins rapidly worsening. Liam asks Scott to bite Hayden, hoping that it will heal her, but Scott refuses to do so.


Status Asthmaticus
directed by: Russell Mulcahy Air Date: August 24, 2015

Scott argues that Hayden is weak and will die if he bites her. The pack enlist Melissa to treat Hayden at the vet clinic, while Lydia discovers that Parrish is a hellhound. Theo locks Malia up at the hospital, and then abducts and injures Sheriff Stilinski. Scott goes to the school, where Theo traps him with mountain ash and reveals that he was the first Chimera, and Scott finds that Theo was poisoning him by putting wolfsbane in his inhaler. Malia escapes, but is attacked by a Chimera. However, Braeden rescues her and warns her of the Desert Wolf. Theo confronts Stiles and reveals his plan to create a pack of villains. Scott and Liam engage in a fight, and Scott’s poisoning and his unwillingness to kill Liam render him disadvantaged, but Mason appears and returns Liam to a calm state. Theo kills Scott, however, Melissa is able to revive him. Theo accesses Lydia’s memories, and brings her to the Nemeton where he injects Tracy, Corey, Josh, and Hayden to revive them as his own pack. The Doctors uncover a painting depicting a battle between a hellhound and another creature.


The Last Chimera
directed by: Russell Mulcahy Air Date: January 5, 2016

Parrish experiences a vision, which prompts him to search for Lydia; he discovers her in the woods in a catatonic state. Stiles confronts Scott, demanding to know what happened to his father. After a brief discussion, Stiles meets with Theo. Stiles and Scott deduce that Stiles’ father was attacked by another Chimera, Noah Patrick, who is also being hunted by the Dread Doctors. Lydia’s mom signs papers to transfer Lydia to Eichen House. The pack find Noah and are confronted by the Dread Doctors, but Chris Argent helps them escape. Stiles discovers that his dad was poisoned by Noah’s bone spikes. This information is relayed to Melissa, who informs the surgeon to remove a piece of Noah’s bone spike from Sheriff Stilinski’s body, and saves his life. In a flashforward, Lydia experiences a vision where she sees Theo’s sister without her heart, and discovers that in the past, the Dread Doctors transplanted the heart to Theo to make him the first Chimera. Theo kidnaps Lydia, but Parrish shows up in his Hellhound form.


Damnatio Memoriae
directed by: Tim Andrew Air Date: January 12, 2016

Hayden and Liam are attacked by a massive, shadowy creature, which Scott later identifies as the Doctors’ last Chimera. Scott and Stiles reconcile and begin investigating the creature, while Theo trains his new Chimera pack. Malia and Braeden discover that the Desert Wolf is on her way to Beacon Hills with Deaton hostage. Lydia has a dream of Meredith, who promises to teach her how to control her banshee powers. Scott and Stiles deduce that the monster is an ancient supernatural creature that was recreated by the Dread Doctors, and decide that they need to reunite their pack. Chris visits Gerard, heals him using a strange plant, and interrogates him about the last Chimera. Gerard reveals that the creature is the Beast of Gévaudan. Kira and her mother are in New Mexico, where they are confronted by a trio of Skinwalkers.


Codominance
directed by: Jennifer Lynch Air Date: January 19, 2016

Theo and Tracy are confronted by the Doctors and the Beast, after Theo reveals that the Doctors are trying to help the Beast remember its past self and unleash its full power. Meanwhile, the Skinwalkers inform Kira and Noshiko that they intend to test Kira to see if she can learn control; if not, they will turn her into a Skinwalker. Scott and Stiles go in search of Kira, and reconcile along the way; in the process, Scott deduces that Malia intends to kill her mother, the Desert Wolf. At Eichen House, Meredith continues teaching Lydia how to use her banshee powers. Kira’s test begins, as the Skinwalkers summon an Oni for her to fight; however, Kira’s inner fox takes control of her and destroys the Oni, thereby failing the test. The Skinwalkers attempt to force Kira to stay, but Scott and Stiles arrive in time to rescue her and Noshiko. Kira and Scott reunite as they return home. Liam and Mason tell Scott that they’ve learned Theo is trying to find a blind Alpha, and Scott realizes that Theo is looking for Deucalion.


The Sword and the Spirit
directed by: Kate Eastridge Air Date: January 26, 2016

Chris and Gerard find corpses in the sewers, victims of the Beast. Scott and Liam discover the Doctors’ underground lair, where they meet up with Chris and Gerard and discover a painting in the Doctor’s lair that depicts a battle between the Beast and a Hellhound. Gerard and Chris help Parrish to discover his true nature. Malia, Braeden and Theo track down the Desert Wolf and find Deaton, but Theo hands Malia over to the Desert Wolf in exchange for Belasko’s claws. The Desert Wolf reveals that she wants to kill Malia because she lost some of her power when she gave birth to Malia, and intends to reabsorb that power. The Beast appears and attacks; Malia, Braeden and Deaton escape, and the Desert Wolf gets away. Lydia gains control over her powers and tries to escape Eichen House, but fails. Theo and his pack have captured Deucalion, now blind again; he deduces that Theo wants his help in stealing the Beast’s powers, and demands Scott’s eyes in exchange. Scott reunites his pack and begins planning to rescue Lydia.


Amplification
directed by: Russell Mulcahy Air Date: February 2, 2016

The Beast goes on a rampage through Beacon Hills; Parrish tries to stop it as a Hellhound, but is defeated. Deaton warns Scott and Stiles that, if Dr. Valack has drilled a hole into Lydia’s skull to amplify her powers, it will kill her, as well as triggering a supercharged “death scream” that will kill everyone around her. Scott and his pack develop a plan to get Lydia out of Eichen House. Scott, Stiles and Liam infiltrate Eichen House, while Malia and Kira enter the electrical room and are able to knock out the power. Deucalion informs Hayden that Theo intends to use Belasko’s claws to absorb the Beast’s power, but the claws will kill him if Theo uses them. Scott and Liam are able to get Stiles into the closed wing, where supernatural creatures cannot enter due to mountain ash. Stiles reaches Lydia, to find that Valack has already performed the operation, and hides when Valack arrives. Theo and his pack break into the asylum, and use Lydia to lure the Hellhound to them. Eichen House goes on lockdown, trapping everyone inside.


Lie Ability
directed by: Russell Mulcahy Air Date: February 9, 2016

Parrish easily overpowers Tracy, Josh and Corey, but Theo disables him by impaling him; meanwhile, Valack escapes with Lydia, and Stiles and Theo pursues them. Scott and Liam find Meredith, who tells Scott that Parrish can find Lydia. Kira’s electricity begins to overload, but Josh helps her by absorbing the electricity; in exchange, Malia helps to heal Corey, who was badly burned by Parrish. Valack plans to increase Lydia’s power so that she can discover the identity of the Beast, and reveals that he intends to put a Dread Doctor helmet on her; however, Lydia loses control and unleashes a scream that kills Valack. Scott and Liam help Parrish transform back into his Hellhound form. Stiles and Theo rescue Lydia, while Parrish burns through the mountain ash barrier, allowing Scott and Liam to follow him. Lydia begins to unleash a deadly scream, but Parrish smothers the scream and saves the others. Mason and Hayden restore power to Eichen House, and the packs escape. Scott and Stiles rush Lydia to Deaton, who heals her.


A Credible Threat
directed by: Tim Andrew Air Date: February 16, 2016

Parrish fights the Beast at the school, but loses, as the Beast is getting smarter. Mason deduces that the Doctors are using high-frequency radio signals to trigger the Beast’s shifts, and the pack realize that the Beast may be summoned again at the upcoming lacrosse game. Scott and Stiles find Bobby Finstock in rehab, and convince him to coach the game, planning on having him forfeit the game; however, Finstock refuses to do so and the game begins. Scott convinces Brett and his sister Lori to help them. With help from Chris, Gerard and Lydia, Parrish is able to access his Hellhound side; the Hellhound informs Lydia that it possessed Parrish when he died defusing a bomb. At the game, Kira loses control and injures several players, before storming off. She almost kills Lori, but Scott stops her. Mason and Corey search for the Beast’s human form at the game. Meanwhile, Malia disables the broadcast antennas, but she is interrupted by the Desert Wolf, and the news broadcast begins. The Beast immediately appears, and overpowers Liam before going on a rampage through the high school.


Maid of Gevaudan
directed by: Joseph P. Genier Air Date: February 23, 2016

Parrish leaves, believing himself to be too dangerous. Chris and Gerard tell Lydia the story of Marie-Jeanne Valet, the first werewolf hunter and the woman who killed the first Beast of Gévaudan. With help from her allies, including a man named Henri Argent, she hunted down and killed the Beast, which was revealed to be her brother Sebastien. Marie-Jeanne later married Henri and took his surname; they went on to start the Argent family of hunters. Gerard suggests that Lydia might be able to kill the Beast, but she insists that they need Parrish and leaves to find him. Meanwhile, Scott takes on the Beast at the school, while Stiles and Hayden manage to heal Liam. Scott fights the Beast in the school library, after transforming in front of numerous students, and is losing until Stiles, Liam, Malia and Braeden come to help him. The four of them manage to drive the Beast out of the school, and Scott follows its scent to a car where they find a pair of bloody sneakers. Mason shows up and reveals that it’s his car, and Scott and Liam realize that Mason is the Beast’s human form. Before any of them can do anything, Corey appears and abducts Mason.


The Beast of Beacon Hills
directed by: Tim Andrew Air Date: March 1, 2016

Mason is abducted by the Dread Doctors. Lydia and Sheriff Stilinski persuade Parrish to remain in Beacon Hills and to fight the Beast. Deucalion reveals that he could have escaped from Theo at any time, and advises Theo on what to do next. Theo kills Josh and absorbs his power, allowing him to wear the Dread Doctor helmet to discern the Beast’s identity; however, he doesn’t see Mason. Scott, Liam and Theo team up and find Mason at the Doctors’ lair, but they are cornered by the Doctors. Malia and Braeden are confronted by the Desert Wolf at Scott’s house; the Desert Wolf gets past the mountain ash barrier, but Braeden recreates the barrier and traps the Desert Wolf inside the house with Malia. Kira returns to the desert and requests the Skinwalkers’ help. The Doctors easily overpower Scott, Liam and Theo, but Mason then naturally transforms into the Beast. The Beast kills the Doctors, before Parrish, Chris and Gerard arrive and join the fight. The Beast reverts back to human form, but transforms into Sebastien instead of Mason.