Banksy, Terry, Grace and Mickey are following a man called Nigel Wren who has been grooming girls online. They track his movements via a computer link-up…
Although they discover Nigel's been talking to young girls in an internet chat room under the guise of a 13-year-old called Ginni, Grace says that they need further evidence before making an arrest and ensuring a conviction…
Pcs Kirsty Knight and Leon Taylor are sent undercover to follow Nigel. Later, they discover that Wren has made an arrangement to meet a girl called Kelli at Waterloo Station. The team are unsure whether they should make an arrest or wait for Nigel and Kelli to meet
When it's decided to let the meeting go ahead, Leon and Kirsty head to Waterloo, ready to catch the paedophile in the act… The undercover cops go their separate ways as they keep a look-out for Nigel and Kelli
Kirsty keeps her eyes peeled
Eventually, Leon gets word that Nigel and Kelli have been located
Leon and Kirsty swoop
The cops are horrified to discover that they've made a mistake – it's not Nigel and Kelli, but just a couple of innocent bystanders!
Leon and Kirsty can't apologise enough!
So what's happened to the girl? Watch The Bill on ITV1 on Tuesday, May 25