How do the billions of organized crimes manage to evade controls? Who are the men in the shadows who help the godfathers of international drug trafficking to launder their fortunes? To dismantle these networks, police captain john miller applied the methods of criminal investigation. Spinning, wiretapping, sound systems... For several years, his team traced the dirty money river. This hunt resulted in spectacular seizures. In 2018, 18 million euros in criminal assets and 100 million euros in tax fraud were confiscated. A record in france. Known as operations virus, retrovirus, or even cedar, these investigations revealed the existence of a key player in money laundering: saraf. A powerful and mysterious character, a link between the world of drug traffickers and that of international high nance. The missing link in the fight against organized crime. From casablanca to dubai, via paris, antwerp and madras, john miller reveals for the first time, from the inside, the methods used by his group. It takes us into the mysteries of money laundering, where are linked, sometimes without even knowing it, drug traffickers, international bankers, gold smugglers and tax evaders. John miller is a police officer specializing in the fight against money laundering. Former dst, police captain at the central office for the suppression of serious financial crime (ocrgdf) from 2005 to 2015, john miller now heads the anti-drug coordination group at europol, the european criminal police agency. . Hélène constanty is an independent investigative journalist.