was a best seller. Publication history 1978, UK, HarperCollins Pub date July 27, 1978, Hardback 1979, UK, Granada , Pub date 1979, Paperback 1980, US, Putnam Pub Group , Pub date April 1980, Hardback 1980, US, Bantam Books , Pub date 1980, Paperback References Novels by Robert Ludlum 1978 American novels American novels adapted into films