The relationship between Cassie Blake and Kate Meade.
Season One[]
Cassie met Diana's grandmother Kate who is an elder. They would talk about Jane and Henry's death. Cassie came down for juice with Kate in the room and Kate reveal that Cassie has dark magic. Cassie learned about her father John Blackwell and what he had done. Kate offered to help Cassie to be rid of her dark magic. Diana encouraged Cassie to trust her grandmother. Kate buried Cassie and tried to kill her to test her magic. Cassie overcame Kate's magic and got out. Kate realized that Cassie is the one who can tip the balance between good and evil.