Hagen goes undercover as the driver for a manager of a chain of massage parlours, Allison Spencer. Suspected of running a prostitution racket for her uncle and old adversary of Meadows, Charlie Mayne, and the DCI is intent on having Mayne extradited from Portugal. Hagen, subject to gossip from her colleagues over her performance at Santini's trial, struggles to get in with Spencer until Hagen saves her from an ambush. Peter Van Reissen, Spencer's boss and contact for her uncle, asks Spencer and Hagen to rob diamonds from a luxury house. When Van Reissen discovers the man who accompanied Spencer and Hagen to the heist is an undercover cop, Hagen takes drastic action to save his life. When Meadows reveals to Hagen that Van Reissen is going to double cross Mayne, an arrest team is scrambled to arrest all the targets as Mayne flies into the country.