Thomas & Friends Season 11 Episode 4 Dirty Work Episode Title:Dirty Work.Episode Description:James has the job of picking up the Mayor of Sodor for a festival, but Thomas, Percy and Emily have other jobs to do first, with rock loads and the troublesome trucks and James go to wash instead of helping them. But when he realises that none of them has made it to the festival, he decides to help them after all, and doesn't care if he gets dirty. But the Fat Controller reassures him that a dirty engine always proves to finish a lot of work to be very useful engine.