Scooby Doo Where Are You!, Mystery Mask Mix-Up

The gang follows a mysterious figure through a marsh to the house of a latter-day Dr. Jekyll, 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.

The kids look for a ghostly bank robber who seems able to walk through walls.

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 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 Shaggy are threatened by a witch doctor.

The gang goes camping and stumbles across a lonely graveyard and an empty tomb whose missing inhabitant was suspected of being a werewolf.

A phantom interrupts Shaggy and Scooby's performance on a TV dance show.