Thomas the Tank Engine & Friends Season 19 Episode 4 Henry Spots Trouble Episode Title:Henry Spots Trouble.Episode Description:Henry believes that engines can get chickenpox, and he first spots Thomas having actually mud in his face, and then he spots Paxton with exhaust in his face from Diesel, and then spots Gordon with red spots in his face which is actually paint; but after encountering Gordon, he flees backwards, nearly colliding with James and his passenger train. Eventually he stops at the same station he started at, and Thomas, Gordon and Winston with the Fat Controller and his grandchildren, arrive. The Fat Controller explains that only people can get chickenpox, and that they mostly get it when they are young. Later, Henry meets Paxton again, and he jokes about diesels getting measles, but says it was a joke. Henry says he also joked with his own reaction, and they try to go their separate ways in the end.