Forensic evidence given by Nikki contributes to the release on appeal of disturbed ex-soldier David Bennetto, charged with murdering two gay boys, one of whom he had sex with. DI Rachel Klein is not convinced of David's innocence , especially when a rent boy calling himself Byron Lee is shot dead and David's car is caught on CCTV near the murder scene. The fact that Nikki is dating Bennetto's solicitor Greg Walker makes her partial in the inspector's eyes and she is removed from the case. On the night that yet another gay youngster Charlie Masham is also shot Greg, on a date with Nikki, gets a frantic phone call from Bennetto and they go to his flat where he points a gun at them after he discovers Nikki has found his kitbag containing the murder weapons

La policía rodea el apartamento, pero David le entrega el arma a Greg, explicando que era el arma de su padre, que había encontrado y quería deshacerse de ella. Nikki es verbalmente abusada por el padre de Charlie y el inspector DI Klein quiere suspenderla, pero Clarissa y Jack descubren que el arma encontrada por David no mató a Charlie ni tampoco pudo haber matado a Byron Lee. Los patólogos descubren que el verdadero asesino en serie tenía un inquietante conocimiento del pasado de David Bennetto y su motivo no era sexual, sino obsesionado con tener poder sobre los demás. Las circunstancias también terminan la participación de Nikki con Greg Walker.