The Evil Within Me (Nolan Gerard Funk)

When 15 year old Kayla Wilson moves from Scotland to Vancouver to live with her mum and half brother Caden, not everything turns out like she planned, her dad leaves her without telling her why and her brother turns against her at school, will she find out why both of them are doing or did what they did?, she then meets 16 year old Tyler and they become the best of friends, suddenly Kayla sees something on her wrist that she hasn't seen before, like a tattoo. She starts behaving badly and starts to not care about anyone, will she go to the bad side? Or will Caden and Tyler get her to snap out of it before it's too late?