1 Season
32 Episode
The Scooby-Doo/Dynomutt Hour - Season 1 Episode 19 The Frightened Hound Meets Demons Underground
Seattle, Washington is ravaged by evil demons.
- Year: 1976
- Country: United States of America
- Genre: Animation, Comedy, Family, Kids, Mystery
- Studio: ABC
- Keyword: criminal investigation, cartoon dog
- Director: William Hanna, Joseph Barbera
- Cast: Henry Corden, Allan Melvin, Casey Kasem, Julie McWhirter, Micky Dolenz, Don Messick