Nancy Springer - Enola Holmes - A titokzatos levél esete

Almost a year after her disappearance, Enola Holmes' mother finally shows signs of life. What kind of mess could he have gotten himself into, and can Enola help him?

A mysterious message arrives at the Holmes residence from Enola, Mycroft and Sherlock's long-lost mother. After Eudoria Holmes's daughter Enola addresses the letter, Sherlock, who deeply respects the institution of letter secrecy, has no choice but to get his hands on his sister, who keeps putting him down, once and for all.
Enola has enough trouble without the persistent interest of her master detective brother: she is investigating the disappearance of Lady Blanchefleur, consort of a Spanish prince. How can the sensational case be related to Eudoria Holmes, and what can the mother's message contain that only Enola can decipher? Enola, Sherlock and Mycroft are forced to join forces, but can they find family peace?