Dr. Quest is invited to the London museum, there to determine the origins of a mysterious crystal skull. Unfortunately, an ancient Druidic cult is also interested in the skull -- so much so that they're willing to kill in order to steal the artifact. It is up to the Quest team to prevent the cult from unleashing the skull's awesome and horrifying powers upon the modern world. "Skullduggery" made its syndicated TV bow on March 1, 1987, as part of the weekend "Funtastic World of Hanna-Barbera" package. ~ Hal Erickson, All Movie Guide