Here's what Booklist has to say about the story: "Twelve-year-old book lover Florence is thrilled to be leaving Miss Medleycoate's Home for Orphan Girls to live at Crutchfield Hall with her newly discovered great-aunt, great-uncle, and cousin James. Six months before, James's sister Sophia died in an accident, and Florence quickly discovers that Sophia's ghost is haunting Crutchfield to punish James for his part in her death. Sophia is full of malice and pride, and as she grows in strength, Florence fears for James's safety, yet she feels powerless to resist Sophia's control..."
This book, like many others by Mary Downing Hahn, features supernatural characters and is full of suspense. On her official website, you can read about this book and others you may have read, including The Old Willis Place and Wait Till Helen Comes.
If you're looking for suspenseful mysteries, you'll want to try a Mary Downing Hahn book; you won't be disappointed!