The first book in the “Detectives from Arville” series is a story about three teenagers who investigate mysteries and hunt for treasure. Twelve-year-old Olivier lives in a remote village where nothing ever happens. But one day he notices a strange incident on the neighbor's property. Having made his way there, the teenager discovers ancient chests with an unusual emblem: two riders sitting on the same horse... What is hidden inside? Could the chests belong to the Templars, whose command was once located in these places? And how is the suspicious man who settled in the house opposite connected with all this? Unwittingly, Olivier finds himself in the center of a mysterious story, because of which the fate of the entire village and, perhaps, even the country is at stake! Features of the book - Bestseller of the French Amazon in children's detective genre - The series was sold in France with a total circulation of more than 30 thousand copies in the first year of sales - Introduces children to the world of detective literature - Fascinating plot and charming characters that will be close and understandable to children For whom is this book For children from 10 years old. For lovers of exciting detective stories. For fans of history and knightly themes. Published in Russian for the first time.