The PossessiveTwin

It's about to twins named Sia and Mia that move into a new neighborhood and a new house. While Sia is unpacking Mia takes a look around the house when she's find a basement and goes down there, While she's down their called The Book Of Darkness and heads upstairs to her locks the door and beings what will Mia become? While Mia keeps reading Mia becomes dark herself when she at the dinner table Sia sees some strange so Mia went to investigate in her room and finds the book and tells her sister that she found the book. Now Mia is pollting revenge