A Fright at the Opera

A Fright At The Opera is the first part of the twelfth episode of the first season of The Richie Rich/Scooby-Doo Show.

Premise
The guys are in Paris, France, and when they cross and open manhole cover, they accidentaly fall into the famous underground sewers where they encounter a phantom who haunts them.

Cast and Characters

 * Don Messick as Scooby-Doo and Scrappy-Doo
 * Casey Kasem as Shaggy Rogers