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S05E15: Parents DayArnold asks Grandpa what really happened with his parents, and he finds out that they disappeared after they left the country on a plane, although they might still be alive.
Air Date:
May 10, 2001
Runtime:
24 minutes
Production:
Casts:
Spencer Klein, Jamil Walker Smith, Olivia Hack, Anndi McAfee, Justin Shenkarow, Francesca Marie Smith, Blake McIver Ewing, Dan Castellaneta
