Hey Arnold!
Grandpa's Sister (4x23)
Uitzenddatum: Okt 16, 1999
Grandpa's sister unexpectedly shows up at the Boarding House, but Arnold doesn't know why she and Grandpa are always fighting with each other.
- in première gegaan: Okt 1996
- Afleveringen: 209
- Volgers: 127
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- Daily op 18