Someone is seducing and murdering wealthy London businessmen. The victims all belong to an elite fitness club that's a hot spot for unfaithful spouses. Annie tells Murphy to pose as a high-flying banker, join the club, and start dating. Using his considerable charm, he finds scams, cheating husbands, and a string of beautiful suspects.

The murder of a notorious East End gangster puts London on the brink of a bloody street war. Murphy joins a rival gang, enters the glittering world of the city's club scene, and works against the clock to gather evidence and prevent more killings. When tensions reach the boiling point, Annie joins ranks with Murphy on the front lines of the prime suspect's latest venture.