Hemmingway and Nadir investigate Billy Aldridge's accusation against his doctor, but the pressure of the case leads Nadir to lose his cool in front of the suspect. With the girl refusing to corroborate Aldridge's story, the case looks all but set to collapse until Nadir ranks up the pressure. Meanwhile, Perkins investigates the assault on Fletcher, but convinced that Hinckley was behind the assault, Fletcher turns up on his doorstep and gives him a friendly punch in the face. When Stamp and Hollis stop a man in possession of Fletcher's warrant card, he identifies the two men who attacked Fletcher as Hinckley's usher and best man for his wedding to Keane, but Fletcher refuses to pursue the case.