Riddle of the Gold is the fifth episode of the 1960's Jonny Quest.
Dr. Zin tries to profit from man made gold.
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- Maharajah of Jahilipur (only appearance; dies)
- Abdul Kaseem (only appearance; presumably dies)
- Dr. Zin (first appearance)(monitor)
- Ali (only appearance; dies)
- D.J. (single appearance)(no lines)
- Stewardess (single appearance)
- Parrot (single appearance)
- Professor Gunderson (single appearance)
- Karab, the tiger (single appearance)
|Tim Matthieson||Jonny Quest|
|Don Messick|| Dr. Benton Quest|
|Mike Road||Race Bannon|
|Daws Butler||Phil Corvin|
|Vic Perrin||Dr. Zin|
- Gunderson goes from a doctor to a professor.
- Jonny Quest: The Complete First Season DVD released on August 15, 2006 by Warner Home Video.
- Jonny Quest: The Complete First Season (Hanna-Barbera Diamond Collection) DVD released on June 6, 2017 by Warner Home Video.
- Jonny Quest: The Complete Original Series Blu-ray Disc released on June 11, 2019 by Warner Archive Collection.
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