Duncan

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.

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.