The Libri GmbH The Shadow's Final Game

To Kenji Rossi, the world is not a collection of people and places; it is a series of equations waiting to be solved.
As the world's most clinical forensic investigator, Rossi has built a career on the belief that every crime leaves a logical footprint. But at the opulent Villa d'Oro, the math has stopped adding up. The legendary Blue Star Diamond has vanished, replaced not by fingerprints or DNA, but by an "Error 404" signature-a digital mockery left specifically for him.
Rossi soon realizes he isn't investigating a heist; he is the protagonist in a curated performance. The Architect, a phantom criminal who treats reality as a script, has turned Rossi's own hyper-logical process into the very instrument of his downfall. Every piece of evidence he finds is a breadcrumb leading toward his own arrest. Every deduction he makes is a line of code in the Architect's master plan.
Branded a fugitive and hunted by the very systems he once served, Rossi is forced into an uneasy alliance with Nikolai Volkov, a pragmatic enforcer who survives on instinct and brute force rather than equations. Together, they track the Architect to the SS Leviathan, a gargantuan floating fortress charting a course through the Atlantic.
But as the ship's mechanical heart begins to fail and the global financial system teeters on the edge of a choreographed collapse, Rossi faces a devastating choice. To catch a ghost who knows his every move, he must abandon the logic that defines him. He must stop being the detective and start being the variable the Architect didn't account for: pure, unadulterated chaos.
In the final game, the only way to win is to break the board.