S1·E9 Caillou is Afraid in the Dark

Caillou can’t get to sleep because he’s sure there’s a monster in his bedroom. Mom and Dad try to reassure him, but things go from bad to worse when he thinks his toy snake is real. Dad shows him that the scary noises he hears are being made by a tree branch brushing against the window and in the end, the only ‘monster’ in Caillou’s room is Gilbert the cat.