While in prison, Wilson campaigned vigorously for his innocence and repeatedly filed Freedom of Information Act requests with the government. Eventually, he found information linked to the memo and hired a new lawyer. His lawyer was David Adler, a former CIA officer who had clearance to view classified documents. Adler spent long hours poring through thousands of files and eventually found 80 incidents where Wilson met on a professional basis with the CIA and proof that the CIA had indirectly used Wilson after his retirement. "His revenge for his framing came almost too late. In 2003 his conviction for the explosives-shipping was overturned because, wrote the judge, the government had lied. Far from no contacts with the CIA between 1971 and 1978, there had been at least 80. Several ran intriguingly 'parallel' to the illegal acts he had been charged with. The next year he was released, white-haired at 76, fighting fit and pumped up with his own righteousness, to spend the rest of his days trying to clear his name."