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.
| Name | Type | Role | |
|---|---|---|---|
| Adam Beechen | Writer | ||
| Dana Daurey | Guest Star | ||
| Nora Dunn | Guest Star | ||
| Max Perlich | Guest Star | ||
| Bronson Pinchot | Guest Star | ||
| Warren Sroka | Guest Star | ||
| Cathy Malkasian | Director |