Peter Wright in 1963 following what Wright refers to as a tip-off by "a fifth man, still inside", he became convinced that the KGB had penetrated the higher reaches of MI5. As claimed in "Spycatcher", Wright had come to believe that Roger Hollis was the highest traitor in MI5. Wright went so far as to begin to make, as he himself put it, "his own 'freelance' inquiries into Hollis' background" shortly before the latter's retirement. According to Wright, his initial, unspecified, suspicion was aroused by his analysis of how a Soviet 'illegal' Lonsdale's arrest in January 1961 was handled by the KGB
Dan S. Wright Dan S. Wright Dan Stiles Wright (March 5, 1802 Shoreham, Addison County, Vermont – January 31, 1867 Whitehall, Washington County, New York) was an American physician and politician from New York. He was the son of Ebenezer Wright (1765–1845) and Lucretia (Wood) Wright (c. 1771–1808). He married first Eluthera Farnham. In 1830, he married Lucy Alvira Wadhams (1805–1884), and they had six children. He was a member of the New York State Assembly (Washington Co.) in 1842. He was a member of the New York State Senate (13th D.) in 1852 and 1853. He was one of the founders, and