The first season concludes with Cassie and Diana tapping into dark magic to help Faye fight off the Witch Hunters. Meanwhile, Dawn and Charles try to restore their powers, regardless of the consequences.
The Circle members investigate the pilfering of a crystal and conclude that a traitor witch connected to Eben was behind the theft. Meanwhile, alliances are potentially destroyed; Faye and Jake join forces to steal Dawn's crystal; Melissa and Adam discover a new magic trick.
The other Blackwell child is revealed as the Circle members confront disturbing theories about the events of 16 years earlier. Meanwhile, Diana tries to balance her pursuit of the Glaser crystal with her romantic life; and Callum tries to reinsert himself into Melissa's life.
Jake receives a surprise visit from a witch hunter, who has a message for Blackwell about Eben's next move. Meanwhile, Faye and Melissa agree to help Adam at the Boathouse, if he will help them use their magic to enhance their love lives.
Blackwell searches for a device that will drain a witch's power. Meanwhile, Faye is surprised when she meets a girl who claims to be Lee's girlfriend; and Melissa encourages Diana to date a normal guy.
An evil figure from Cassie's past arrives in town and asks her for the medallion she found in the charred remains of her house after a fire killed her parents. Later, Cassie is kidnapped by a band of witch hunters. Meanwhile, Faye and Diana become concerned when Melissa starts spending more time with Callum.
Cassie receives a warning about the return of the witch hunters and asks for the Circle's help. Later, her true feelings for Adam and Jake surface at a birthday party; and Faye and Melissa take their powers to a frightening new level.
Jake returns to town to warn Cassie that unless they discover how her father died in a boat fire 16 years ago that she will meet the same fate. Meanwhile, Faye gets trapped in a dangerous situation when one of Lee's friends visits the shop.
Adam asks Cassie to the Fire and Ice dance when he helps her research her father's past. Meanwhile, Faye tries to conduct a spell that will grant her individual magic, but it has terrifying consequences.
Cassie uncovers a secret about herself and tries to keep it hidden from the Circle members. Meanwhile, Diana's grandmother visits and takes an unusual interest in Cassie; and Faye recruits a mysterious stranger to help her cast a spell that could change the balance of the Circle.
Cassie tries to find out more about her lineage to see why she has powers separate from the circle. Meanwhile, Faye stirs up trouble when she reveals that Jake is hiding something dangerous from them; Melissa's cute cousin visits and catches Diana's eye.
Melissa persuades Nick to help her search for her family's Book of Shadows. Meanwhile, Diana arranges a date night with Adam; and Dawn joins Charles aboard his boat to further their plans for the circle, but he has more than business on his mind.
Cassie visits one of her late mother's friends and discovers the woman has been in a catatonic state for 16 years. Cassie then tries to use magic to help the lady, and she persuades Faye to assist her with the spell.
Adam gets jealous when Cassie brings a cute date to the school dance. Meanwhile, Melissa uses the dance to get closer to Nick; and a man from Dawn's past arrives in town asking questions about Cassie and the circle.
Cassie tries to live without witchcraft and establish a normal life by befriending a non-witch. Meanwhile, Diana fears that the circle's powers are getting out of control; and Adam fights his growing feelings for Cassie.