Cora Hale

Cora is a new character in Season 3 of Teen Wolf and is played by Australian actor Adelaide Kane.

The character is listed simply as “Cora” in all official source material.

She is Derek Hale’s younger sister and is a werewolf. Derek was surprised that she had survived the Hale House fire that claimed most of the rest of their family.

Season 3
Cora was held prisoner in a bank vault lined with Hecatolite which blocked her from moonlight for three months. When once again exposed to the power of the moon, she turned wild and was out of control. She escaped with fellow prisoner Boyd and led Derek, Scott, Isaac and Chris Argent on a chase through Beacon Hills Preserve and the high school. She was ultimately subdued by her brother. (read more…)

Cora refuses to rest so that she can heal, pushing herself to do strenuous exercise until her brother stops her. They fight and she expresses frustration that he won’t help her go after The Alpha Pack that held her captive for three months. She's frustrated with Derek saying "I came back for this?". She had apparently heard there was a powerful new Alpha in Beacon Hills who was also a member of the Hale family. When Alphas Ennis and Kali attack, she is no match for them and is easily subdued. (read more…)

Cora, Derek and Boyd plan an attack on the Alphas. Her uncle, Peter Hale, and Scott protest. During the fight Cora gets in a few good hits but is again put down by the stronger Alphas. With Kali’s foot on her throat, Derek is told he must choose to save either Cora or his beta Boyd. Before he has to choose, Allison Argent arrives and breaks up the fight. After Derek’s apparent death, Cora and Peter search for his body. He questions where she’s been for the six years since the fire – she does not give him an answer. (read more…)

She and Stiles try to get Lydia into some kind of trance so she could tell them where Dr. Deaton is. When nothing works they head back to Derek's loft where Cora grieves over the loss of Boyd.