The gang follows a mysterious figure through a marsh to the house of a latter-day Dr. Jekyl, whose alter ego is apparently a jewel thief.
When Daphne innocently buys a mask that once belonged to an ancient warlord, the gang finds itself pursued by zombies and ghosts.
Shaggy and Scooby hook a frozen caveman and present the chilly artifact to Oceanland. But the creature is mysteriously thawed out and goes on a rampage.
The kids look for a ghostly bank robber who seems able to walk through walls.
The gang investigates a haunted southern mansion when the Mystery Machine overheats and strands them nearby.
A Hawaiian vacation turns into another investigation when Scooby and Shag are threatened by a witch doctor.
Don Messick
Scooby-Doo
Frank Welker
Fred "Freddy" Jones
Casey Kasem
Norville "Shaggy" Rogers
Heather North
Daphne Blake
Nicole Jaffe
Velma Dinkley