Can a systematic, mathematical approach to roulette consistently defeat the house edge at a casino? Norman Leigh, a professional gambler, details his attempt to prove that a team-based betting strategy could overcome the inherent randomness of the roulette wheel. The book serves as a firsthand account of his efforts to organize a group of thirteen individuals to execute a specific system at the Casino de Nice in France, documenting the logistical challenges and the eventual confrontation with casino management.

Gambling historians and enthusiasts often cite this work as a classic account of the cat-and-mouse game between casinos and advantage players. While the mathematical validity of the system remains a subject of debate, the book is widely recognized for its candid portrayal of the risks involved in attempting to beat the house.