About this "The Simpsons" episode:

The Simpsons - Insane Clown Poppy is the 3rd episode of season 12 and number 251 overall in the series.
In the episode, during an outdoor book fair, Krusty finds out he has a daughter (from a one-night stand with a female soldier who fought in the Gulf War), but loses her trust after gambling away her violin to Fat Tony, prompting Homer and Krusty to retrieve it.