The Case of the Gypsy Goodbye

As Enola searches for the missing Lady Blanchefleur del Campo, she discovers that her brother Sherlock is just as diligently searching for Enola herself! He is in possession of a most peculiar package- a message from their long-lost mother. Sherlock and Enola must solve a triple mystery: What has happened to their mother? And to Lady Blanchefleur? And what does either have to do with their brother, Mycroft?