The Moonstone Castle Mystery

When Nancy Drew receives a valuable moonstone as a gift from a stranger, she is amazed and puzzled. But it is only the first of many startling events in this complex and challenging mystery. Nancy and her friend George travel to a quaint town in Massachusetts to investigate, discovering the disappearance of a respectable socialite leads them to a deserted castle deep in the woods. Once there, they find a world of mystery and horror. While investigating, they also learn about the Bowens, a missionary couple struggling to find their missing granddaughter, Joanie Horton. With rumors of Moonstone Castle being haunted and other strange occurrences in Deep River, Nancy is convinced there is a connection between the mysterious moonstone gift and the disappearance of Joanie. Nancy and her friends must unravel the intricate puzzle to solve the mystery.