S5·E6 The Apprentice

As Fisher launches a campaign to make the police more popular with young people a boy called Nicky comes to Pie in the Sky, claiming he is there for work experience. Henry uses him in the kitchen and he impresses everyone but then the till is robbed and Nicky, who was not sent by any school, goes missing. His mother last saw him a week earlier, the night an off-licence was robbed by a violent teenage gang. Henry tracks Nicky down to a childhood haunt and finds out that he was bullied into joining the gang and now regrets it, which he proves by leading them into a police trap.