Sherlock, Lupin, and me

Whisked out of Paris ahead of the Prussian army in 1870, twelve-year-old Irene Adler is reunited in London with her friends, Sherlock Holmes and Arsène Lupin--but Arsène's father has been arrested for murder and the kidnapping of a famous opera singer, and it is up to the three young detectives to solve the mystery.

Irene's family has moved to Evreux, Normandy. Soon after arriving at her new home, she is approached by a mysterious woman who mutters some strange words about Irene's mother being in danger, before vanishing into thin air. It's just the first in a series of unsettling events that Irene, Sherlock, and Lupin must decipher. The three sleuths questions will lead them to a secret crypt far beneath the streets of Paris and to an ancient relic that it is...