The Mystery Solvers gang heads to London's 221B Baker Street to participate in the Mystery Solvers Contest, partnering with other detectives to solve the notorious "Mystery of the Blue Carbuncle", a puzzle that has even stumped Sherlock Holmes.
1. Happy Birthday, Scooby-Doo (1)
Aired: Sep 8, 1984A reunion of old friends marks Scooby's birthday at a TV studio in Los Angele...
2. Happy Birthday, Scooby-Doo (2)
Aired: Sep 8, 1984A villain from Scooby's past crashes a TV studio special, spoiling his birthd...
3. Scooby's Peep-Hole Pandemonium
Aired: Sep 15, 1984A team embarks on a mysterious assignment to converse with reclusive Norma De...
Aired: Sep 15, 1984The Mystery Machine's route takes an unexpected turn when Shaggy's wrong navi...
Aired: Sep 22, 1984A chilling European adventure takes a dark turn for the friends as they check...
Aired: Sep 22, 1984Scooby and the gang join forces with a covert café owner to investigate the d...
Aired: Sep 29, 1984The Mystery Machine gang embarks on a perilous mission to thwart a diabolical...
8. Doom Service/A Code in the Nose
Aired: Sep 29, 1984The Mystery Machine gang is racing to catch Codefingers, a cunning spy who's ...
9. Doom Service/A Code in the Nose
Aired: Oct 6, 1984Scooby-Done embarks on a mission to track down a cunning thief who has pilfer...
10. Ghosts of the Ancient Astronauts
Aired: Oct 6, 1984The Mystery Inc. gang encounters Velma's uncle, who presents them with a cruc...
11. The Night of the Living Toys/South Pole Vault
Aired: Oct 13, 1984The Mystery Machine gang discovers a magical German toy shop where toys sprin...
12. Ghosts of the Ancient Astronauts
Aired: Oct 13, 1984The gang embarks on a thrilling adventure to uncover the secrets of an ancien...
13. A Halloween Hassle at Dracula's Castle
Aired: Oct 20, 1984The gang's shopping spree takes an unexpected turn as they embark on a thrill...
14. A Night Louse at the White House
Aired: Oct 20, 1984The Mystery Inc. gang enjoys a thrilling night at the White House, where Velm...
15. The 'Dooby Dooby Doo' Ado/Showboat Scooby
Aired: Oct 27, 1984A mysterious and terrifying presence, thought to be Col. Beauregard, plagues ...
16. A Halloween Hassle at Dracula's Castle
Aired: Oct 27, 1984While shopping for costumes, the friends discover a centuries-old castle and ...
Aired: Nov 3, 1984The Mystery Solvers gang heads to London's 221B Baker Street to participate i...
18. A Scarey Duel with a Cartoon Ghoul/E*I*E*I*O
Aired: Nov 3, 1984The gang heads to the iconic Bananatoons Studios in Hollywood, tracing the ro...
Aired: Nov 10, 1984A mysterious ghost from the Civil War era is wreaking havoc on Dixie Doo's sh...
Aired: Nov 10, 1984A festive tradition turns eerie as a mischievous spirit begins to haunt the s...
