Kent and Hollis investigate an armed robbery on a jewellers, with assistance from Murphy's daughter, who is spending a day's work experience with the team. When they discover that the weapon used was in fact a water pistol, and the jewellery that was stolen is fake, they uncover that the jeweller's brother was responsible for the death of the robber's family. Meanwhile, Nadir and Hunter investigate the production of fake passports, and discover a link between Pete Larson and the owner of the print works where the passports are being produced. However, despite facing a lengthy jail sentence, the man refuses to co-operate with them or implicate Larson in any way, shape or form.