On a cool August evening in 1941, a Serbian playboy created a stir at Casino Estoril in Portugal by throwing down an outrageously large baccarat bet to humiliate his opponent. The Serbian was a British double agent, and the money - which he had just stolen from the Germans - belonged to the British. From the sideline, watching with intent interest, was none other than Ian Fleming... The Serbian was Dusko Popov. As a youngster, he was expelled from his London prep school. Years later, he would be arrested and banished from Germany for making derogatory statements about the Third Reich. When World War II ensued, the playboy became a spy, eventually serving three dangerous masters: the Abwehr, MI5 and MI6, and the FBI. On August 10, 1941, the Germans sent Popov to the United States to construct a spy network and gather information on Pearl Harbor. He successfully made contact with the FBI in an attempt to warn the country, but J. Edgar Hoover blew his cover. Later, MI5 desperately needed Popov to deceive the Abwehr about the D-Day invasion, but they assured him that a return to the German Secret Service Headquarters in Lisbon would result in torture and execution. He went anyway... Into the Lion's Mouth is a globe-trotting account of a man's entanglement with espionage, murder, assassins, and lovers - including enemy spies and a Hollywood starlet. It is a story of subterfuge, seduction, patriotism, and cold-blooded courage. It is the story of Dusko Popov - the inspiration for James Bond.