Former Special Forces soldier Jason Fox travels through South America, investigating the cartel strongholds of Mexico, Colombia and Peru to lift the lid on their brutal worlds. What kind of lives do their members have, what does their work involve and how do they continue to evade the law? Jason begins in Mexico, where he meets members of the Sinaloa cartel – including killers and ex-assassins – witnesses brutality first hand and finds himself in the middle of a turf war as he tries to get to the bottom of how they operate