Jack finds it hard to believe when his parents tell him the weird changes in his older brother, Stephen, are normal for teenagers, and his suspicions are confirmed when pets start disappearing and strange noises come from the attic while Stephen is supposedly away at school.

When Sandy neglects to take care of his teenaged sister Dolly's guinea pig, Princess Snowflake, while Dolly is away, the beloved pet dies but returns to seek vengeance.

"Abbey's best friend is her reflection--the mysterious girl who looks just like her and lives on the other side of her mirror. But can she really trust Bee--enough to switch places with her?"--

"Eight-year-old Seamus's friend gives him an egg she found by the side of the road. No big deal. Until the egg starts turning into something else"--