The Opal Needle

In Paris during the 19th century, Alexandre Ducas—a police officer directly under the orders of Prefect Gisquet—is confronted with a series of strangulation murders. Is this the work of a single assassin or that of a group of fanatics? Faced with the absence of any clues left by each crime, nor the emergence of the slightest motive that could explain these murders, Alexandre Ducas, in order to interrupt the chain of homicides, will have to place his trust in Jos, a young orphan living in the quarries of Montmartre. The latter possesses a gift that an old librarian, guardian of the Library of Books in the Making, revealed to him on his 13th birthday. The police officer, increasingly attached to the young man's personality, will not fail to exploit his information derived from this power, the secret of which Jos will never reveal to him.