Episode 1 | Tattoo

In the season premiere, a new Alpha Pack arrives to wreak havoc on Scott's life while Derek and Isaac struggle to locate Erica and Boyd.

Episode 2 | Chaos Rising

Allison and Lydia stumble upon a possible clue to finding Boyd and Erica while a childhood friend of Stiles goes missing.

Episode 3 | Fireflies

With Boyd and Cora on the loose and under the influence of the full moon, Scott and Derek must turn to an unlikely ally for help.

Episode 4 | Unleashed

While Scott tries to keep Isaac from engaging in a deadly confrontation with the Twins in school, Stiles attempts to prove his theory that the killings have nothing to do with werewolves.

Episode 5 | Frayed

During a bus ride to a cross country meet, Scott and his friends flash back to the events of a preemptive strike against the Alphas that has left several injured and possibly one or more dead.

Episode 6 | Motel California

Stranded at a motel for the night because of the postponed cross country meet, Scott and the others suffer strange experiences that cause them to believe members of their own group may be the mysterious killer's newest targets.

Episode 7 | Currents

As the danger begins to reach closer to Scott, threatening his trusted mentor and boss, Deaton, Kali and the Twins go after Derek.

Episode 8 | Visionary

Seeking answers, Scott, Allison and Stiles hear stories told by two unlikely narrators and discover a secret about the color of a werewolf's eyes.

Episode 9 | The Girl Who Knew Too Much

As Allison begins to suspect someone dangerously close to her may be involved in the murders, Scott and Stiles conclude that Lydia's rising talents may be their best bet to solving the murders.

Episode 10 | The Overlooked

Trapped inside an evacuated Beacon Hills hospital by a powerful storm, Scott and Derek must defend themselves against the Alphas while trying to figure out how to save Cora's life.

Episode 11 | Alpha Pact

With the threat growing far more personal and time running out on innocent lives, Scott is forced to make a difficult choice in order to save both friends and family while, at the same time, Derek and Peter try to figure out how t...

Episode 12 | Lunar Ellipse

Under Deaton's advice, Scott and his friends use an ancient but extremely dangerous ritual to help them both save the lives of the people they love and stop Deucalion from achieving his sinister goal.

Episode 13 | Anchors

After a near death experience from the Nemeton Scott, Stiles and Alison start hallucinating and a dark curse is left upon which makes their life hell.

Episode 14 | More Bad Than Good

Scott and his friends race to figure out how to catch the Werecoyote before it's hunted down while Derek and Peter are broken out of captivity by an unlikely ally.

Episode 15 | Galvanize

The twins are back in high school and look to join Scott's pack while a killer escapes from hospital for his next target in high school.

Episode 16 | Illuminated

Beacon Hills is under curfew from the power outage; the teens throw a blacklight Halloween party; Scott tries to earn Kira's trust.

Episode 17 | Silverfinger

The gang finally figures out who or what is behind the mask.

Episode 18 | Riddled

Stiles is kidnapped and the pack search for him.

Episode 19 | Letharia Vulpina

Stiles is back and Scott must prevent a disaster; Lydia and Allison seek help from an unlikely source.

Episode 20 | Echo House

Stiles is put into a mental hospital where he believes he will be safe from the Nogitsune. Will he be as far away from it as he thinks or closer than ever? Meanwhile Scott, Allison and Lydia look for a cure for Stiles.

Episode 21 | The Fox and the Wolf

While Allison, Derek, Chris and Sheriff Stilinski try to track down Nogitsune, Kira's mother tells the story of the Nogitsune she came to know.

Episode 22 | De-Void

With the Nogitsune still in control of their friend, Scott and Lydia find an unlikely ally in Peter Hale. Elsewhere, the effects of the Nogitsune have given Chris, Alison and Kira some trouble with four out-of-control werewolves.

Episode 23 | Insatiable

Scott and company race to rescue Lydia from the clutches of evil as the Nogitsune makes a surprise move, resulting in a tragic loss to the group.

Episode 24 | The Divine Move

Struck by disaster and nearly defeated, Scott and Derek call on their friends and allies to make one last stand.