When Cass Rickman's handbag is found in the street, the high from last night's party quickly dissipates. Now it's not just Nick Klein who worries for her safety. Then a body is found in the Thames and everyone holds their breath - but it's not Cass. Interviews with PCs Klein, Young and Best and Robbie Cryer, reveal to DCI Meadows and Insp Gold that three men have an axe to grind with Cass - Simon Kitson, Shane Pellow and Martin Porter. Beside himself with worry, Nick Klein is ordered home, but frantic to find Cass, he wanders the shoreline. Meanwhile PCs Hollis and Taviner find Kitson and Pellow fighting, Pellow saying he was attacked for no reason. Kitson says he was in love with Cass, and Pellow killed her because she had talked his girlfriend into leaving him. Both are taken back to the station for questioning. Tragically, Klein finds Cass's body lying by the river - Sun Hill's serial killer has taken one of their own. Nick is inconsolable, but when Cass's mother arrives he gives he

DI Samantha Nixon is on the trail of the serial killer and on the phone to DC Duncan Lennox when it goes dead. Duncan traces the call, but he and PC Taviner arrive to find only Cass Rickman's neck chain, and Samantha's phone - and her last call was from Pat Kitson... It's Kerry and Luke's wedding day and Inspector Gina Gold is not happy to find the groom in bed with Craig Gilmore. Both Gina and Gilmore want Luke to tell Kerry, but for very different reasons, so with a reception venue in doubt, Gold tries to convince Kerry to postpone the wedding. DS Phil Hunter is in deep, as crime boss Ron Gregory wants to sleep with Hunter's wife and Phil has no way out. What will he do now that the tables have been turned on his philandering ways? Lennox and DC Mickey Webb break into Kitson's house, but find nothing. While from the attic of the house next door, Kitson taunts a bound and blindfolded Nixon as she watches them drive away. Nixon fishes for information, and when prodded by Pat, talks abo