This is the extraordinary story of how Charlie Wilson - renowned as one of the leaders of the Great Train Robbery gang - turned his back on so-called traditional crime to become the underworld's original narco by helping to mastermind a multi-billion dollar drugs network in partnership with the original cocaine cowboy, Pablo Escobar.

Wilson secretly helped turn cocaine into the Western world's number one recreational drug of choice. Secret Narco unravels the bullet riddled, never-before-told history of South Londoner Wilson's cocaine empire and his forays into the deadliest killing fields of all: South America.

Bestselling author Wensley Clarkson's meticulously researched story features interviews with many of Wilson's friends, family members and enemies on both sides of the law enforcement divide, as well as associates of Pablo Escobar.

Secret Narco also reveals the final, tragic circumstances behind Wilson and Escobar's bloody deaths, and how their twisted 'partnership' proved that gangsters never rest in peace.