Jacob Lane Series book 1: The Tenth Ghost (Jacob Lane Young Adult Fantasy Series)

When ten-year old Jacob Lane's parents mysteriously vanish, she is sent to Darkbrook, the only school of magic in the United States. While there, she stumbles upon a series of mysterious deaths. Nine students have died in the past one hundred years. Nine ghosts haunt the halls of Darkbrook. Will Jacob be the tenth ghost, or will she be able to stop a witch's reign of terror with the help of her friends?