After failing to capture Trevor Little and his gang after their aborted diamond raid, DI Neil Manson begins to have his doubts about his Australian colleague, DI Peter Cavanaugh, and suspects he may be leaking information to the gang. The rivalry between the two DIs escalates, but Cavanaugh has his eye set on DS Samantha Nixon, and the two share a passionate kiss. Insp Gina Gold and CPS Lawyer Jonathan Fox's verbal sparring also turns to passion, and PCs Cameron Tait and Kerry Young decide to give their disasterous relationship another try. PC Gabriel Kent continues his vendetta against Coal Lane resident Roy Stafford who he suspects is a paedophile. When he suspects Stafford has staged a robbery to gain access to the victim's grandchildren, he crosses the line and attacks Stafford, beating him badly. Supt Adam Okaro sends the hate mail he has received for forensic examination, but with the sender almost certainly an officer in his station, they most likely know how to cover their trac

DC Rob Thatcher is keeping a close eye on the Radfords despite the warnings of his colleagues. He eagerly arrests David Radford for selling bootleg DVDs on the Coal Lane Estate, but when David's mother Irene turns up with a proof of purchase, Thatcher knows he's been set up by his nemesis. DS Phil Hunter in running the CSU, and despite DC Jim Carver's misgivings, Hunter's forceful manner gets results when he convinces a reluctant pregnant domestic violence victim to testify. When a casino punter is mugged after a large win, Carver organises an undercover operation with PCs Cameron Tait and Honey Harman. Carver wins big on the tables, and sure enough, is mugged as he gets home. The team manage to crack the case when they realise the connection between one of the croupiers and a cab driver, but has Carver's big win tipped his addictive personality back into overdrive? Despite being on leave, PC Kerry Young returns to the station to declare her love to Cameron, but after being taunted by

The net is closing in on Alan Kennedy, the main suspect for the serial rapes. Kennedy is not at home when the police raid his flat, and several other leads - an allotment he keeps, and his (deceased) mother - also fall through. Eventually he is found through his hobby of falconry and arrested. CPS lawyer Jonathan Fox warns that more than the forensic evidence is needed to prosecute Kennedy, and reluctant witness Khadija Miah is brought into the station to identify him as her assailant. However, when Khadija runs into PC Gabriel Kent, PC Kerry Young could lose her job over the fact that she may have ""tainted"" the witness by showing her Gabriel's photograph. PC Cameron Tait's job is also on the line after his attack on Kent in the canteen. Despite Kent's agreement to a transfer, Tait decides to leave Sun Hill, London and Kerry Young behind and he catches a cab to Heathrow to fly back to Sydney.

With insufficient forensic evidence to charge him, DI Neil Manson and DS Samantha Nixon have 24 hours to extract a confession from serial rape suspect Alan Kennedy. CPS laywer Jonathan Fox, who previously defended Kennedy on an assault charge, watches the proceedings with great interest, but the stress may be too much for him, and he jeopardises his relationship with Insp. Gina Gold when he makes a comment about her not having children. With police scouring Kennedy's mother's flat for forensic evidence or clues which will help, Manson and Nixon continue their interview, but Kennedy is a tough nut to crack. The next day, literally at the last minute, Nixon puts the pieces together and Kennedy finally confesses. Simultaneously, Dr Hugh Wallis finds a knife in the flat. With Kennedy behind bars, the relief attend a community party organised by Supt. Okaro, but the fun is quickly over when a massive bomb explodes.