Sherlock Holmes - The Cartographer’s Cathedral. Sherlock Holmes - The Lazarus Protocol, #1

Former Scotland Yard detective Emre Karasu is a man haunted by the past. On the fifth anniversary of his partner's death, a mysterious package arrives at his London flat-a pair of Ray-Ban Meta smart glasses. When he puts them on, a calm voice introduces itself: "Hello, Emre. I am HOLMES. I have been waiting for you." The glasses reveal a hidden message on the wall across the street, and moments later, Emre watches his long-dead mentor gunned down before his eyes.
So begins a labyrinthine game orchestrated by a shadowy figure known only as the Cartographer. Armed with the AI's deductive genius and a medical empathy module called DR. WATSON, Emre plunges into a world of ancient secret societies, encrypted murders, and impossible puzzles. Every clue leads deeper into a conspiracy that stretches from the ruins of London to the mountains of Anatolia. But the most terrifying revelation is yet to come: the Cartographer isn't just a killer-he's a split personality born from a chip implanted in Emre's own brain.
The murders, the ciphers, the breadcrumb trail of horrors-all of it has been orchestrated by a part of himself he never knew existed. Now Emre must race against time to stop a ritual that could merge his consciousness with the AI and unleash a new form of life upon the world. Together with brilliant neuroscientist Dr. Elara Vance, whose own dark secrets are intertwined with his, Emre must navigate a cathedral of lies, confront the father who betrayed him, and face the ultimate question: when the monster you're hunting wears your own face, how do you fight back?Blending the razor-sharp deduction of Sherlock Holmes with cutting-edge artificial intelligence, THE CARTOGRAPHER'S CATHEDRAL is the first book in the five-volume Lazarus Protocol series-a mind-bending thriller that will keep you guessing until the final, unforgettable page.
Welcome to the game. The Cartographer is already watching.