The Bill Season 26 Episode 18 (The Bill s26e18) with title “That Type Of Cop“ airs on Tuesday, May 4th 2010. In this 18th episode, after a 15-year-old girl who has been missing for the pat two years is found confused and traumatised, the team attempt to identify her and discover why she is there. Meanwhile, Helen ends up revealing that she was forced into prostitution by her boyfriend Hassan’s uncle.