Plot: Sgt June Ackland and PCs Jim Carver, Tony Stamp and Polly Page are trapped in a cellar, and with Jim's wedding to Marie Graham only hours away, tempers start to fray amongst the group as old tensions boil to the surface. A leather-clad biker who turns up at the station turns out to be the new Detective Constable, Juliet Becker, who is paired with Mickey Webb when PC Gary Best realises that four Sun Hill officers have gone missing