The Eldorado Network is a 1979 espionage novel by Derek Robinson, published by Hamish Hamilton. Three sequels followed: Artillery of Lies in 1991, Red Rag Blues in 2006, and Operation Bamboozle in 2009. The first novel, like all of Robinson's work, is based on fact, in this case a genuine double-agent known as "Garbo". Source: Wikipedia (en)