DS Max Carter is charged up on cocaine as the Sun Hill officers track a paedophile. When DCs Mickey Webb and Terry Perkins see Max drop some drugs, he claims he confiscated them but they don't believe him and Terry gives him an ultimatum... Meanwhile, the Sun Hill team trail Nigel Wren (Celyn Jones – Mr Green in Grange Hill), a vile specimen who uses the internet to find girls that he can take advantage of. Nasty Nigel is posing as teenage Ginni in a chatroom, getting girls to trust him. The officers are tracking his conversations and Pcs Kirsty Knight and Leon Taylor are sent undercover so they can get close to the paedophile and keep an eye on him. They follow him when he goes to work and, while they're watching him, DC Jacob Banks and DC Terry Perkins put some surveillance equipment in Nigel's home. So far so good... Then Max nearly kills himself and DC Mickey Webb by forcing Mickey to run their car into Nigel's so he can't catch Banksy and Terry in his home. When Nigel arranges to see young Kelli Sutton (Poppy Lee Friar – Dead Gorgeous) at London's Waterloo Station, Max insists they let the meeting happen so they can catch Nigel bang to rights. They catch Nigel but there's no sign of Kelli...
