Topaz is a Cold War suspense novel by Leon Uris, published in 1967 by McGraw-Hill. The novel spent one week atop The New York Times Best Seller List (on the list dated October 15, 1967), and was Uris's first New York Times number-one bestseller since Exodus in 1959. During its 52-week run on the list, Topaz set two records in two weeks; those for largest positional jump to number-one (9–1) and largest positional fall from number-one (1–5). Source: Wikipedia (en)