Angela and her friends Georgina and Poco are mystified by the strange messages that appear on the mantelpiece in Angels's house during the night. They're written on beautiful paper in purple ink and signed The Gray-Eyed Faerie. When opened, they send clouds of gold dust floating into the air. The letters speak of magic and wonders beyond belief -- and the loneliness of a fairy who longs to communicate with humans. No one will ever believe the girls unless they get some proof. And when the Investigators of the Unknown plan a sleepover tofind out more, they discover that there really is magic in this world, and it can touch anyone who believes.