What secrets are buried deep in the ancient ruins of Moonhouse? When three sisters are sent to stay with their grandparents for the summer, they stumble upon perplexing characters deep in the southwest desert. Who can they trust? The independent threesome must rely on courage and each other in order to survive the escapades and live to tell the tale. The Sullivan Sisters and the Mystery of Moonhouse is a witty adventure, both parents and children alike will find endearing.