The Increment

The Increment by David Ignatius revolves around a young Iranian scientist who sends encrypted messages to the CIA about Iran's nuclear weapons program.

The story follows Harry Pappas, a senior CIA officer, as he navigates the complexities of international espionage and must collaborate with a secret British spy team to protect the scientist and prevent a catastrophic attack.

The novel explores themes of deception, loyalty, and moral ambiguity in the world of espionage.