The police may have a serial killer on their hands when they locate a second body in a site where the first victim was found several months before. The body was trussed up in the same way and had an identical burn mark on his back. There is no apparent link between the first victim, student Michael Haughty, and the second Jason Villers, a probationer at the police college. While the police find evidence that may solve the Otty case, they have nothing on the Villers murder. In a separate case, Harry is approached by the wife of an old university friend who asks him to perform a post-mortem on her husband who died in a fall. Harry finds that his old friend was injecting himself regularly. Leo's family is visiting for a few days but he's constantly being called into work.

The pathologists busy week continues with a variety of cases. Nikki examines a death in a telemarketing office. Several workers were vying for promotion and the police suspect foul play. Harry deals with the case of a professional footballer who committed suicide. He realizes there is a link to another case he is working on. Leo deals with the case of a drunk who died on a bus. There is little information about the man and the case becomes more of a puzzle when the autopsy reveals that he wasn't drunk at all.

En sus esfuerzos por ayudar a Naomi, Nikki cree que Silverlake estaba automedicándose con una cura experimental para la depresión, aunque su viuda lo niega y un representante de la compañía de pastillas, haciéndose pasar por inspector de salud, intenta sacar a Nikki del caso. Después de ser arrestada por robo en tiendas y sentirse perpetuamente cansada, Nikki es referida a un psiquiatra que diagnostica depresión. Naomi es muy solidaria durante todo el proceso, pero en el hospital, la policía hace un descubrimiento aterrador que cuestiona la motivación de Naomi. Incluso después de que el verdadero asesino es castigado, ocurre otra muerte, lo que lleva al cierre para Nikki.