ODESSA is an American codename coined in 1946 to cover Nazi underground escape-plans made at the end of World War II by a group of SS officers with the aim of facilitating secret escape routes, and any directly ensuing arrangements. The concept of the existence of an actual ODESSA organisation has circulated widely in fictional spy novels and movies, including Frederick Forsyth's best-selling 1972 thriller The Odessa File. The escape-routes have become known as "ratlines". Known goals of elements within the SS included allowing SS members to escape to Argentina or to the Middle East under false passports.