Sean Flannery is the pen name of author
David Hagberg, a former Air Force cryptographer who has traveled extensively in Europe, the Arctic, and the Caribbean and has spoken at CIA functions. He has published more than twenty novels of suspense, including the bestselling
High Flight, Assassin, and
Joshua’s Hammer. He makes his home in Vero Beach, Florida.
Sean Flannery is the pen name of author David Hagberg (1947-2019), a former Air Force cryptographer who traveled extensively in Europe, the Arctic, and the Caribbean. He spent more than thirty years researching and studying US-Soviet relations during the Cold War.
He wrote dozens of novels of suspense, including the bestselling High Flight, Assassin, and Joshua’s Hammer.
