Under and Alone

William Queen was a nearly 20-year ATF veteran as well as a motorcycle enthusiast when, in 1998, a "confidential informant" contacted Queen's superiors, offering to help place an agent inside the San Fernando Valley chapter of the Mongols. Queen's work was soon to become the most extensive undercover operation into a motorcycle gang in the history of American law enforcement.

Queen, using the alias Billy St. John, successfully infiltrated the gang by posing as a heavily bearded and long-haired motorcyclist who liked to drink beer and ride his Harley-Davidson motorcycle. After becoming a full member ("patched"), Queen eventually rose to the office of Treasurer in the organization. As Treasurer, he had access to evidence of the gang's criminal activity and was able to build a case against dozens of Mongol club members. Initially, Queen was subjected by members to tests of his fealty by taking part in and witnessing the trafficking of drugs and firearms and the theft of motorcycles, as well as driving getaway cars.

In the book Queen details how, after 28 months, he began to lose his own identity to his new persona. He explained how he learned to battle the conflicts both within the gang and within himself in order to keep his identity a secret. Despite the activities of the group, Queen also came to appreciate their camaraderie and sense of family. When the work began to have the effect of isolating Queen, he explains in the book, the Mongols began to feel like his own family, causing emotional difficulty for him when the investigation closed more than two years after it had begun.

• Queen, William (2005). Under and Alone. Random House. ISBN 978-1-4000-6084-9.