A 2002 riot between the Hells Angels and the Mongols kick-starts an undercover operation. Federal agent Jay Dobyns investigates a group soaked in 40 years of blood and violence.

Butch Crouch is at the height of his criminal reign when a mother and child are killed. He begins to question his loyalty to the club. Ex-president Matt Zanoskar gives his first ever TV interview.

Margo Compton is set to testify against the Hells Angels. Before she gets the chance, she's murdered. Her young daughters are also killed. Detective Mike Graham retells his 18-year quest for justice.

After he’s rejected by the Minnesota Hells Angels, Charles ‘Peewee’ Goldsmith becomes president of the Las Vegas chapter. But when he’s arrested after a violent brawl, he finds himself an outcast.

Presidents and ex-wives of the Hells Angels speak out about the patriarch of the club, Sonny Barger. And what happened when the Hells Angels acted as security at a Rolling Stones concert?

Pat Matter is a meth dealer and president of a Minneapolis chapter. But when a dangerous war with the Outlaws leads to deadly confrontations, he has to make a choice: the Hells Angels or his family?