The gang joins Velma's uncle on a dangerous expedition to the Lost Temple of Sirius.
Cast Appearances
Don Messick
voices Scooby-Doo
Don Messick
voices Scrappy-Doo
Casey Kasem
voices Shaggy Rogers
Heather North
voices Daphne Blake
Frank Welker
voices Fred Jones
Marla Frumkin
voices Velma DinkleyEpisode Discussion
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