The Polonium Principle

In the shadow of the Iron Curtain, a secret worth killing for is about to be played.

The Cold War is a chessboard of ice and shadow. When a brilliant Czech composer and part-time spy, Ladislav Novák, defects to the West, he brings with more than just secrets—he brings a warning. A Soviet plot, codenamed "TSAR BORIS," aims to assassinate President John F. Kennedy using an undetectable radioactive isotope.

The proof is not on paper. It is hidden in the one place no one would think to look: the belly of a priceless Stradivarius violin, sealed within the vaults of Prague Castle.

MI6’s most unconventional agent, Nathan Hawke, a polymath brawler with the mind of a physicist and the soul of a warrior, is paired with Anastasia Petrova, a disgraced KGB Sparrow seeking redemption for a past stained in blood. Backed by Harry "Crypto" McGuire, an agoraphobic tech wizard operating from a London safehouse, they are the only ones who can retrieve the violin before the KGB’s assassination squad silences the truth forever.

From the haunting beauty of Charles Bridge to the modernist lines of Villa Tugendhat, Hawke and Petrova must navigate a city of ancient secrets and modern betrayals. They are hunted by a ruthless KGB team and undermined by a traitorous CIA liaison, Agent "Dove," whose allegiance lies with Maoist China. With the world hurtling towards catastrophe, they must decipher the composer's code, master a deadly art, and prove that in a world of lies, the purest truth can be found in the most beautiful of vessels.