At first, Klaus Fuchs offers almost nothing.On January 24, 1950, inside an unremarkable English house, the physicist sits opposite MI5 interrogator William Skardon and begins speaking with the caution of a man testing the strength of every word before releasing it. His confession does not contain the name Julius Rosenberg. It does not contain the name Ethel Rosenberg. Fuchs cannot even identify the American courier who collected atomic secrets from him years earlier.He remembers fragments instead: a face, a voice, meetings in New York and New Mexico, a man known only as Raymond.From those fragments begins one of the most consequential manhunts of the Cold War.The Hours Between Names places the reader inside the British interrogation rooms, guarded offices, teleprinter stations, Washington conference rooms, Philadelphia laboratories, apartments, railway journeys, and late-night searches through which investigators transformed one physicist's halting admission into a widening American espionage case. The chronology advances through the decisive hours of the investigation: Fuchs's surrender to Skardon, the drafting of his confession, the first protected communications across the Atlantic, the FBI's struggle to identify Raymond without revealing the existence of the VENONA decryptions, Harry Gold's collapse under interrogation, David Greenglass's shifting account, and the final movement toward Julius and Ethel Rosenberg.This is not a courtroom retelling and not a conventional history of atomic espionage. It is an immersive reconstruction of the moments when information changed hands and official patience became institutional panic. The reader already knows where the investigation will end. The suspense lies in watching intelligent people approach that ending without yet being able to see it.
