Concern: A black-ops investigator uncovers an espionage conspiracy rooted in quantum code

When a St Petersburg restaurant is ripped apart by a bomb, consulting mathematician Marc Naedorf is dragged back into the shadow world he thought he'd left behind. Once an intelligence analyst, now an outsider with a gift for spotting hidden patterns, he finds himself at the heart of an international mystery where every answer raises new questions.

With MI5 and CIA espionage networks looming in the background, Naedorf follows a trail that winds from the Russian mafia to the boardrooms of mul...