Poison Apple: Curiosity Killed the Cat by Sierra Harriman (author) (US edition)

Hannah isn’t thrilled to be moving in with her dad and his new family, who live right next to a spooky cemetery. Luckily, Hannah doesn’t believe all the “ghost cat” stories she’s heard about the graveyard. Not so luckily, the cemetery is the least of Hannah’s troubles. Her stepsister, Madison, is the meanest girl in Hannah’s grade. Her cat, Icky, has been missing since the move. And worst of all, Hannah can’t sleep at night. Something keeps scratching at her door, but when she looks for it, nothing is ever there! Hannah is starting to wonder – could those scary stories be true after all?