Sgt. Sheelagh Murphy reports to Insp. Gina Gold and DCI Jack Meadows that she was visited by Des Taviner the night before. Having learned of baby Niamh's death, Taviner finds PC Reg Hollis alone guarding her chapel of rest. When Hollis tries to radio Sun Hill, Des overpowers him and handcuffs him, and Hollis lets slip that PC Cameron Tait was babysitting Niamh when she died. Back at the station, Hollis admits to Insp. Gold that he knew Des started the Sun Hill fire, and he fears for his career as he is questioned by MIT. Following a tip-off from DC Terry Perkins' snout, DI Neil Manson goes undercover as a hitman when a woman wants her husband killed. As DS Ramani De Costa investigates the domestic violence aspect of the case, the husband's involvement in an actual murder is revealed. DI Manson is delighted with the result, but DS De Costa is upset when Manson usurps her CSU authority. PCs Gary Best and Tony Stamp trawl internet chat rooms looking for 'Hotpants', a suspected fraudster w