Synopsis

The Mystery Inc. gang solve bigger mysteries while also encountering many memorable celebrities.

The crew wanted to invite Michael Phelps to do an episode with Jabberjaw, but it was not produced due to him declining.

He stated: Jay liked the idea and the original concept of the show, but instead of celebrity guest stars, it was originally going to feature guests from other Hanna-Barbera shows, with potential guests including Jonny Quest and Frankenstein Jr. and The Impossibles.