Scooby Doo; Shaggy; Velma; Daphne; Fred; Jacob Richfield (in flashback); Detective Kelly; Charlie; the Colony Creature; Two unnamed thugs
Scooby and the gang visit New Lichfield, home to the legendary "Colony Creature," a giant iron monster who terrorized rebel colonists after the Boston Tea Party. While Shaggy and Scooby cash travelers' cheques, the Creature appears to attack the bank. In the commotion, a safety deposit box is stolen and Scooby is captured. The gang tracks down a historical journal describing the creation of a demon suit out of iron to scare the townspeople. They use the information they learn to rescue Scooby, capture the crooks and destroy the suit.
Scooby Doo; Shaggy; Velma; Daphne; Fred; Hal Hollingsworth, Jr.; Keith Durbin; Mr. Randolph
Mr. Randolph, an attorney, has read out the last will of Hal Hollingsworth, Sr., who has died and left $2,000,000 to his son, Hal Junior, if he can be found. Three hundred, fourteen Hals come forth, but eventually the right one is located. However, there is a ghost in the mansion, who claims he is not the rightful heir.
Hal hires the gang as ghost-breakers, and invites them to stay a few days to expose the hoax. During he day, they get to relax and enjoy the setting. Shaggy, in particular, enjoys the food, and is still eating when he and Fred turn in for the night.
Fred can't sleep, though, and realizes he's overlooked an important clue. The ghost appears and Fred tries to wake Shaggy, to no avail. Hal asks Fred if the ghost is real and Fred, knowing both the ghost and Hal Junior are fake, declares the ghost genuine. "Hal" confesses that his real name is Keith Durbin and the ghost shows himself to be Randolph, the lawyer.
Durbin tries to escape, but runs into Shaggy, who has twisted himself in a sheet and is suffering from a "first-class nightmare." Fred explains he realized Durbin was a fake because his ear pattern was different than the photo of the real Hal, Jr.