Longtime ATF agent Ken Croke had earned the right to coast to the end of a storied career, having routinely gone undercover to apprehend white supremacists, gun runners, and gang members. But after a chance encounter with an associate of the Pagan Motorcycle Gang created an opening, he transformed himself into “Slam,” a monstrous, axe-handle wielding enforcer whose duty was to protect the leadership “mother club” at all costs.

This is the true story of ex-Mongols M.C. National President Scott Junior Ereckson. From a young teen, peering from behind a bush at an unknown Mongol, Scott fulfills his childhood dreams. In later years, after many experiences, he becomes one of the most respected and feared Mongols to this day.

Hapless Nate Hester yearns for the safety and affection of a group. He sets off on a hitchhiking trip to escape bad parenting and the Vietnam draft. Nate soon longs to be off the road. A drug dealer befriends him and introduces him to the Hells Angels. The Angels introduce him to the wonders of drug use and free sex, but the effects wane, and Nate leaps from mania to depression.

Among members of the outlaw motorcycle clubs, Caesar Campbell is a legend. Former sergeant-at-arms and chief enforcer for the Comancheros, Caesar became the founding member and sergeant-at-arms of the Australian chapter of the Bandidos. He epitomised bikie culture - unbeatable in a fight, brutal in the extreme, fearing no one and nothing, and loyal until death. This is Caesar's story, from his recruitment into the Comancheros, to the savage split within the club that led to the foundation of the Bandidos and the bloody massacre at Milperra that resulted from it.

Despite lacking any experience with motorcycle gangs, Charles Falco infiltrated three of America's deadliest biker gangs: the Vagos, Mongols, and Outlaws. In separate investigations that spanned years and coasts, Falco risked his life, suffering a fractured neck and a severely torn shoulder, working deep under cover to bring violent sociopaths to justice.

Getting shot in the chest as a rookie ATF agent, bartering for machine guns, throttling down the highway at 100 miles per hour, and responding to a full-scale, bloody riot between the Hells Angels and their rivals, the Mongols - these are just a few of the high-adrenaline experiences Jay Dobyns recounts in this action-packed, hard to imagine, but true story of how he infiltrated the legendary Hells Angels.

Martin Corona, a US citizen, fell into the outlaw life at 12 and worked for a crew run by the Arellano brothers, founders of the Tijuana drug cartel that dominated the Southern California drug trade and much bloody gang warfare for decades. Corona's crew would cross into the United States from their luxurious hideout in Mexico, kill whomever needed to be killed north of the border, and return home in the afternoon. Martin Corona played a key role in the downfall of the cartel when he turned state's evidence.

After 40 years in the Hells Angels, George Christie was ready to retire. As president of the high-profile Ventura charter of the club, he had been the yin to Sonny Barger's yang. Barger was the reckless figurehead and de facto world leader of the Hells Angels. Christie was the negotiator, the spokesman, the thinker, the guy who smoothed things out.

Come and ride with the outlaw bikers in California in the glory days of the '60s and '70s. During the wild times of choppers and gang brawls, action and violence that seemed to know no end. Times that cannot be recreated today. Girls, guys, guns, and bikes. Living a life like no other.

In 1998, William Queen was a veteran law-enforcement agent with a lifelong love of motorcycles and a lack of patience with paperwork. When a "confidential informant" made contact with his boss at the Bureau of Alcohol, Tobacco and Firearms, offering to take an agent inside the San Fernando chapter of the Mongols (the scourge of Southern California, and one of the most dangerous gangs in America), Queen jumped at the chance.