Shaggy & Scooby-Doo Get a Clue! - Season 1 - Eps 1: Shags to Riches
Shaggy's uncle disappears and leaves Shaggy with millions of dollars, so Shaggy and Scooby-Doo go to the mansion he left for them and start exploring. They see some of his inventions and then Shaggy sees a note about how his new invention is trying to be stolen by someone and now he must go into hiding. Now Scooby and Shaggy have to go and solve another mystery.
About Shaggy & Scooby-Doo Get a Clue!

Title: Shaggy & Scooby-Doo Get a Clue!
First Air Date: 2006-09-23
Last Air Date: 2008-03-15
Status: Ended
Rating: 8.2/10 (from 98 votes)
Language: EN
Seasons: 3
Total Episodes: 26
Network: The WB The CW
Genres: Animation, Comedy, Family, Kids, Mystery
Production Companies: Warner Bros. Animation
Synopsis
When Shaggy's rich Uncle Albert goes missing and is presumed dead, Shaggy receives an inheritance, which he uses to upgrade the Mystery Machine so it can transform itself into other types of vehicles. Before disappearing, Uncle Albert made some enemies and it is up to Shaggy and his trusty canine, Scooby-Doo, to defeat those enemies, the most dangerous of whom is evil Dr. Phineas Phibes. Armed with the upgraded Mystery Machine, a loyal robot servant and their new riches, Shaggy and Scooby must stop Dr. Phibes' evil plans and save the world.
Cast

Frank Welker
Scooby-Doo (voice)

Scott Menville
Shaggy Rogers / Dr. Trebla / Additional Voices (voice)

Jim Meskimen
Robi / Agent #1 (voice)

Casey Kasem
Uncle Albert (voice)

Jeff Bennett
Dr. Phibes / Agent #2 (voice)