A 16 year old girl learns that older half-sister is the half-sister of Carrie White, Rachel Lang and Vivian Howard and felt in danger when her half-sister has telekinetic power and she must stop her for harming people before it is too late.
- Amanda Seyfried as Hailey Campbell: A 19 year old girl, who has telekinetic powers and is the half-sister of Carrie White, Rachel Lang, Vivian Howard and Annie Havelock
- Eliza Bennett as Annie Havelock: A 16 year old girl, who learns about Hailey’s telekinetic power and is the youngest half-sister of Hailey Campbell.
- Elizabeth Banks as Michelle Campbell: Hailey and Annie's mother.
- Ryan Phillippe as Lucas Havelock: Annie's father and Hailey's step-father.
- Jared Followill as Dennis Butler: Hailey's boyfriend.
- Karen Gillan as Quinn Benson: Hailey's best friend and Kirk’s girlfriend.
- Tristan Wilds as Kirk Donver: Dennis's best friend and Quinn’s boyfriend.
- Georgie Henley as Trixie Hooper: Annie’s best friend.
- Nicola Peltz as Lori Hooper: Trixie's older sister, who bullies Hailey.
- Nick Zano as Steve Reed: Lori’s boyfriend and Jessica's brother.
- Dakota Blue Richards as Jessica Reed: Lori's best friend and Steve’s sister, who bullies Hailey.
- Emma Roberts as Erica Lopez: Jessica's best friend, who bullies Hailey.
- Erica Lopez:
- Steve Reed:
- Jessica Reed:
- Lori Hooper:
- Hailey Campbell:
- Annie Campbell
- Dennis Butler
- Quinn Benson
- Kirk Donver
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