What happens in the secret circle episode 5?

In Episode 5 of "The Secret Circle," titled "Slither," the Circle faces the consequences of their actions when a dark force threatens one of their own. As the group deals with the fallout from their previous spells, they must confront a new threat that is linked to an ancient evil. Relationships among the characters become strained, and secrets are revealed, emphasizing themes of trust and betrayal within the Circle. Meanwhile, Cassie continues to explore her powers and her connection to the mysterious history of the coven.