Nora Dunn as Frieda / Possum (voice)
Episodes 1
Clash of the Teutons
August 31, 1999
2x10
The Thornberrys meet the Fensterkopfs who make false documentaries. The Fensterkopfs' kid lies to Eliza and gets them all stuck on a cliff. After the families barely escape an avalanche, the value of truth is learned by all.
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