Enola Holmes might be the much younger sister of Sherlock Holmes, but she manages to outsmart him at every turn, solving thrilling mysteries in her very own way... 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 needs her help to decipher a message from their long-lost mother. Sherlock, Enola, and their brother, Mycroft, must solve a triple mystery: What has happened to their mother? And to Lady Blanchefleur? And what does either have to do with Mycroft, who holds Enola's future in his hands.