Raymond J. Batvinis is one of our great authorities on American counterintelligence. But he is not merely a scholar. He is himself a former FBI Special Agent, a gifted investigator who learned how spies operate by catching them. With his new book, Agent Link, he has brought to light an espionage tale that has been unjustly forgotten. William Weisband was a roguish American who became perhaps the most valuable double agent ever to work in the service of the KGB. Batvinis lays out the full story in all its noirish glory, presenting the reader with a gripping narrative full of character and incident. Hollywood, are you listening?

Peter Duffy, Author of Double Agent: The First Hero of World War II and How the FBI Outwitted and Destroyed a Nazi Spy Ring

I’m pleased that my friend Ray has followed the Weisband case, a case that I worked on for many years to its conclusion.

Robert Louis Benson, Former NSA historian

I thought I knew the story of William Weisband, arguably the most damaging Russian spy in history, but it turns out I didn’t have a clue. Ray Batvinis has unearthed FBI files that reveal for the first time how the hard-drinking, high-living Weisband wormed his way into the inner sanctum of American code breaking and gave away its most closely guarded secrets. And for his crime, he served less than a year in prison. Incredible!

David C. Martin, CBS News National Security Correspondent and author of Wilderness of Mirrors.

This is an extremely important book about a very, very damaging counterintelligence failure long (hidden or obscured whichever you would judge the better word) by NSA and written by an experienced FBI Special Agent who is also a trained historian. A must read for anyone left in the U.S. Government seriously interested in Counterintelligence.

Paul Redmond, Chief of CIA Counterintelligence, Retired

Agent Link is more than a spy story. Weisband almost disappeared from the attention of historians and the appreciation of his important role in world affairs. Fortunately, Batvinis has countered this neglect by writing his deeply-researched, well-written, colorful and valuable contribution to spy literature.

David Charney, Author of NOIR: Proposing a New Policy for Improving National Security by Fixing the Problem of Insider Spies. Psychiatrist who evaluated FBI spies Earl Pitts and Robert Hanssen and Brian Regan of the National Geospatial Organization