The cathedral of fear. (Sherlock, Lupin, and me, vol. 4.)

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 rumored to be worth a fortune. But how far will someone go to obtain the priceless treasure? Secrets and twists await the young detectives at every turn as they solve the case of The Cathedral of Fear. In March 1871 Irene's family moves from London to Evreux in Normandy, but after a strange woman warns her that her mother is in danger, Irene calls upon her friends Arsène Lupin and Sherlock Holmes for help and soon the three young detectives are caught up in the search for an ancient relic said to be in a secret crypt beneath the streets of Paris - a Paris which is torn apart by war and currently ruled by the Commune. Translation of La Cattedrale della paura.