DS Debbie McAllister's post-natal depression clouds her judgement when a father tries to protect his schizophrenic son. Her attitude alarms DCI Jack Meadows who enlists Eva Sharpe to help him convince Debbie to keep her baby. PC Nick Klein, recently released from hospital, and PC Ruby Buxton are asked by a local shopkeeper to get a drug dealer away from his corner. But while Ruby talks to the shop owner, Nick takes the chance to swap his hospital medication for cocaine. Convinced their chief suspect Shane Pellow is the serial killer, DCs Duncan Lennox and Danny Glaze decide to check the victims' phone records to see if there is any connection. They discover that at least two of the victims had placed ""Lonely Hearts"" ads in the local paper. Meanwhile Pellow's girlfriend, having found a bracelet belonging to one of the murdered girls, tells Cass Rickman she also thinks Shane is the killer. Little does TDC Brandon Kane know that while his seemingly sympathetic partner PC Cathy Bradford gi