Teen Wolf Season 2

Scott McCall (Tyler Posey) and Allison Argent (Crystal Reed) conceal their renewed relationship from Allison's parents, who oppose it because they know Scott is a werewolf. Lydia Martin (Holland Roden) suffers chronic hallucinations since bitten by Peter Hale (Ian Bohen), now dead because Derek Hale (Tyler Hoechlin) killed him to become the new Alpha werewolf. Derek recruits abused teen Isaac Lahey (Daniel Sharman) into his pack. Jackson Whittemore (Colton Haynes), bitten by Derek Hale at the end of Season 1, shows signs of rejecting Derek's bite, but the reason is a mystery. As Allison's heartless grandfather Gerard Argent (Michael Hogan) comes to town for his daughter Kate Argent's (Jill Wagner) funeral, he decides to avenge her death by declaring war against all werewolves, innocent or not. Isaac discovers his abusive father was killed by a strange creature. To keep close watch over Allison, Gerard replaces the Beacon Hills High principal and Allison's mother Victoria Argent (Eaddy Mays) becomes a substitute teacher there. Lydia's hallucinations center on a mysterious young boy at the school. Derek recruits epileptic loner Erica Reyes (Gage Golightly) and a lonely Boyd (Sinqua Walls) to his pack. He discovers the unknown creature is a Kanima, a creature created by a mutation in lycanthropy. Jackson is revealed to be the Kanima, controlled by an unknown master who can make it kill or otherwise harm on orders. Lydia discovers that the Mysterious Young Boy (Michael Fjordbak) she hallucinated about does not exist and is actually a younger Peter Hale. Although dead, Peter is able to use her to lure Derek to him at the old Hale house in order to become resurrected. To save Scott from danger after Victoria learns Scott and Allison are still together, Derek ends up biting Victoria, who commits suicide before she turns into a werewolf. Blaming Derek for his daughter-in-law's death, Gerard manipulates Allison's grief over her dead mother, making Allison become a ruthless hunter. The Kanima's master is revealed to be Matt Daehler (Stephen Lunsford), one of Jackson's high school friends. Matt uses the Kanima/Jackson to seek vengeance against the people who left him, with no swimming ability, to nearly drown years ago at a swim team pool party held by Isaac's swim coach father. Because of the connection between the Kanima and his master, Jackson discovers he newly fears water. Held by Matt at a local police station, Scott, Stiles, their parents, and Derek are able to escape, although Scott transforms for the first time in front of his mother, Melissa McCall (Melissa Ponzio), leaving her horrified. Having drowned Matt, Gerard becomes the Kanima/Jackson's new master. Threatening to kill those close to Matt, Gerard tries to force Scott to help him become the mole in Derek's pack. Fearing for their safety, Boyd and Erica part ways with Derek. Derek learns from Peter, the Kanima's weakness is the love interest of its human form, in this case Lydia. When Jackson, developing to a new stage of the Kanima, is hospitalized, he falls into the hands of Scott's mother, a nurse, and later Scott and his allies. The hunters kidnap and torture Stiles, Erica and Boyd, but they are set free. Realizing his father, Gerard, corrupted his daughter Allison, Chris Argent (JR Bourne) helps Scott and his allies stop the Kanima from evolving. Gerard, confronting Scott and his allies, tries to force Derek to bite him so he will turn into a werewolf and be cured of cancer; otherwise he will order the Kanima to kill his own granddaughter (and Scott's girlfriend) Allison. However, everyone realizes that if Gerard kills Derek afterwards, he will become the Alpha werewolf. Once Gerard has been bitten, it's revealed that Scott had switched Gerard's cancer medication with Mountain Ash (a supernatural repellent), causing Gerard to violently reject the bite. Before Gerard can order the Kanima/Jackson to kill his betrayers, Lydia reaches out to Jackson, who is killed by Derek and Peter. Having solved his inner turmoil, he evolves into a new werewolf just as Gerard disappears. Feeling guilty over her heartless grandfather and his influence over her, Allison breaks up with Scott but he promises to come back. Erica and Boyd leaving Beacon Hills, encounter a pack of menacing figures. Peter and Derek reveal to Isaac that Derek was building a pack to combat the impending Alpha Pack and Peter knows that they have arrived. Also appearing during the season are Dr. Deaton (Seth Gilliam), Adrian Harris (Adam Fristoe), Coach Bobby Finstock (Orny Adams), Sheriff Stilinski (Linden Ashby), Danny Mahealani (Keahu Kahuanui), Marin Morrell (Bianca Lawson) and Mr. Lahey (John Wesley Shipp). Kali, Ennis, Ethan and Aiden make a brief appearance in the season finale, "Master Plan", as the members of the Alpha Pack that kidnapped Boyd and Erica. As of Season 3, they become recurring characters, with their leader Deucalion introduced in "Tattoo", the first episode. These characters are played by Gideon Emery (Deucalion), Brian Patrick Wade (Ennis), Felisha Terrell (Kali), Charlie Carver (Ethan) and Max Carver (Aiden).