During the Great Depression, a violent crime wave sweeps the nation and it's up to the FBI's Melvin Purvis to lead a massive manhunt for the most dangerous men in America.

The Everglades are home to bank robbers, rumrunners, and cold-blooded killers and Sheriff Bob Baker is determined to take down one of the most infamous and deadly gangs in Florida's history.

Lawlessness runs rampant in a notorious Texas outpost and it's up to legendary lawman Dallas Stoudemire to tame the town known as "Hell" Paso.

With outlaws firing machine guns in the streets of Oklahoma City, sharpshooting legend Delf 'Jelly' Bryce is on a collision course with some of the most violent men in America.