Assassination Bureau, Ltd.

In this tightly-paced, thrilling novel begun by Jack London and finished after his death by Robert Fish, young Winter Hall discovers a secret organization called the Assassination Bureau. Believing them to be a society of evil, ruthless killers, he initiates a cunning plan to destroy the organization once and for all. However, the Bureau is more than it seems, and Winter Hall quickly becomes embroiled in a struggle between two factions of "ethical lunatics" within the organization. He will find his loyalties, and his morals, tested on a year-long journey across the United States. - Summary by Tatiana Chichilla