Grandpa's Sister Hey Arnold! : Season 4 Episode 23

Name: Grandpa's Sister
Released: 1999-10-16

TV-Y7 Nickelodeon 15m int(0)

Aired: October 16th, 1999 @ 6:30 PM EST on Nickelodeon

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.

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Season 4 Episode 24 Synchronized Swimming

October 16th, 1999