The titular family in this long-running animated sitcom may be famously fractious, but mess with one of them, and you're liable to find the rest of the clan pushing back. That's exactly what happens when Grampa Simpson (voice of Dan Castellaneta) falls victim to a telephone scam artist, sending his relatives out on a mission to get his money back and avenge their family honor in the new episode "Bart's in Jail." The guest voice cast includes Alan Cumming and sportscaster Scott Hanson ("NFL Redzone").