Fear Street: The Stepsister

The Stepsister is the ninth book in the Fear Street sereis and the book is by R.L. Stine starring

Summary
Emily wants to like her new stepsister. But Jessie doesn't make it easy for her. As soon as Jessie moves in, she takes over Emily's room, starts wearing Emily's clothes, makes secret late-night calls on Emily's phone--and that's just the beginning! Before long, Emily is living in total fear of her stepsister. Emily tries complaining to her parents. But Jessie is such a good liar, no-one will believe Emily. Emily's terror mounts when she picks up Jessie's diary and learns a horrifying secret from Jessie's past. Did Jessie really murder someone? Does she plan to murder again? Emily knows she must find out the rest of her stepsister's dark secret. Her own life depends on it!

Cast
Kate Melton as Emily Casey

Selena Gomez as Jessie Wallner