Everything here is like in a computer game: traps, puzzles, chases. Only there will be no extra life. So fourteen-year-old hacker Evan Cartier must not lose! The headquarters of the secret intelligence services in the catacombs of Paris is his new classroom, a secret flash drive with a mysterious code is his homework assignment. Instead of simple tasks like asking a classmate to erase incriminating evidence, Evan now faces a problem: he is involved in the search for a relic with supposed magical powers. Together with a team from the mysterious Oversight organization, Evan must find the golden ratio artifact before it falls into the hands of criminals. You can’t hesitate for a minute, because the last owner of the artifact started a world war with its help. An action-packed detective story by the French writer Deborah J. Marraju (born in 1985) will appeal to everyone who loves stories in the spirit of Indiana Jones and Lara Croft. Brave and incredibly friendly computer genius Evan Cartier deserves to stand on a par with famous adventurers. Together with him, the reader will not only plunge headlong into adventure, but also will not be able to resist trying to solve the riddles and decipher the codes on the pages of the book on his own.