Overview: 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