The New Scooby and Scrappy-Doo Show - Season 1 - Eps 16: Crazy Carnival Caper
The kids go back to their high school for the Central High Carnival, and run into their old science teacher Mr.McDabble, who has created a ruby lazer that can cut through the hardest metal. But before too long, the ruby ends up missing, and the kids have to find out what happened.
About The New Scooby and Scrappy-Doo Show

Title: The New Scooby and Scrappy-Doo Show
First Air Date: 1983-09-10
Last Air Date: 1984-12-01
Status: Ended
Rating: 8.1/10 (from 141 votes)
Language: EN
Seasons: 2
Total Episodes: 52
Network: ABC
Genres: Animation, Mystery, Family, Comedy, Kids
Production Companies: Hanna-Barbera Productions
Synopsis
The New Scooby and Scrappy Doo Show is the sixth incarnation of the Hanna-Barbera Saturday morning cartoon Scooby-Doo. It premiered on September 10, 1983, and ran for one season on ABC as a half-hour program made up of two eleven-minute short cartoons. The show is a return to the mystery solving format and reintroduces Daphne after a four-year absence. The plots of each episode feature her, Shaggy, Scooby-Doo, and Scrappy-Doo solving supernatural mysteries under the cover of being reporters for a teen magazine.
Cast

Casey Kasem
Shaggy Rogers (voice)

Heather North
Daphne Blake (voice)

Don Messick
Scooby-Doo / Scrappy-Doo (voice)