Scarlett Forsythe is the daughter of Black John and Laura Forsythe, half-sister of Cassie Blake, and maternal cousin of Suzan Whittier. She originally came to New Salem to kill Cassie and take her place in the Circle, but after Suzan's death, Scarlett reforms and helps to defeat her evil ancestors.
Scarlett at first appeared to be a nice person, but her true motives are revealed when she attempts to kill Cassie and steals the Master Tools. After being initiated into the Circle, Scarlett reforms and reveals that it was her dark magic behind her actions.
Powers and Abilities
Being of Blak descent, Scarlett possessed powerful dark magic that she has used extensively throughout the series. She demonstrated an affinity to reading the ancient language in Black John's Book of Shadows, and also has great knowledge of dark spells.
In the TV series, Scarlett is replaced by Diana as Cassie's half-sister.