The gang chases an alien who stole rare metals from a research lab.
Cast Appearances
Don Messick
voices Scooby-Doo
Lennie Weinrib
voices Scrappy-Doo
Casey Kasem
voices Shaggy Rogers
Heather North
voices Daphne Blake
Frank Welker
voices Fred Jones
Patricia Stevens
voices Velma DinkleyEpisode Discussion
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