The seeds of John Walker's spying and betrayal were planted when he was stationed with the Navy in Charleston in the 1960s.
Walker, whose background was in cryptography and communications - and who served on submarines and surface ships during his career - reportedly had a residence on the Isle of Palms.
Locally, he invested heavily in property and even a restaurant. One of the parcels he owned was rented to the Veterans of Foreign Wars Post 3433 near Summerville, according to a 1985 New York Times report on efforts to trace Walker's spy money payoffs.
Among the other ventures locally were driving a cab and shuttling rental cars among cities.
Former Charleston County Magistrate Jack Guedalia helped investigate the Walker spy ring when he was in the Naval Investigative Service.
"It was really bad" what Walker did, Guedalia said Friday. "But it was driven by money."