Cunning Edge: A 45-Year Journey Conducting Global Undercover Investigations

Investigating white-collar crime. Fighting with cartels. Uncovering complex organized crime cases. Here are the stories behind the headlines.

Kim Marsh's memoirs highlight the fast pace and high stakes of undercover investigative work. In the fight against cartels, organized crime groups and international operators, Detective Marsh delves into the chaos and mayhem often hidden from the eyes of civil society.

From the caffeine-fueled life of night-time missions for Canada's national police force, to transitioning to another life running a private investigative firm, Kim Marsh describes the cases that took him from his humble Saskatchewan roots to his international career. He gave decades of his life to this work, all in the pursuit of bringing the bad guys to justice and unraveling the tangled webs of deceit and evasion for his clients . . . and society at large.