John Walker was a Miami undercover narcotics agent in the 1970s. Ten years later, he was in prison for smuggling 12,000 pounds of marijuana. In prison, he connected with a South American drug lord who was still running the family operation from inside the federal pen. Within months of being paroled, John began smuggling again-this time uncut Colombian cocaine. And this time, he put everything on the line: his freedom, his family and, ultimately, his life.

Breaking Midnight: A True Story shines a light on the gritty underbelly of Miami drug trafficking and the danger of leading a double life-as an undercover narc or a smuggler. Written by Lynn Walker based on interviews with her father, John, this is an uncensored, up-close-and-personal account of how a good cop goes bad.