A distraught PC Roz Clarke fails her probation exams, and goes AWOL instead of returning to the station. A gang of thieves on rollerblades are rampant in Sun Hill, and their mobility makes it very difficult for the police to catch them. PC Taviner arrests a girl, Jackie Burns, at a skate park, but she insists she was just watching the skaters. As the skate gang gets more violent, animosity between PC Worrell and Clarke also grows more fierce, and the two come to blows in the corridor. A tearful Clarke admits her debt problem to Taviner. Scrutinising CCTV footage reveals Jackie's involvment with the gang - she phones them when a potential victim withdraws money from an ATM. Clarke returns home to find the bad news that her telesales commission has fallen through and her flatmate Caitlin wants her out.