Ghosts of the Ancient Astronauts (episode)

Ghosts of the Ancient Astronauts is the sixth episode of The New Scooby-Doo Mysteries.

Premise
The kids are on a South American expedition with Velma's uncle, Professor Cosmo Dinkley, to recover the Celestial Orb, a baseball-sized ruby, that has a map to the Lost Temple of Sirius. The temple is believed to have been built by the ancient astronauts and filled with secrets and treasure. It soon seems that they are not the only ones searching; Professor Dinkley's ex-assistant Harriet Mullins is lurking in the background, waiting to steal the orb.

Cast and Characters

 * Don Messick as Scooby-Doo and Scrappy-Doo
 * Casey Kasem as Shaggy Rogers
 * Heather North as Daphne Blake
 * Frank Welker as Fred Jones
 * Marla Frumkin as Velma Dinkley
 * as Professor Cosmo Dinkley
 * as Harriet Mullins
 * as Harriet Mullins' associate

Villains

 * Harriet Mullins
 * Harriet Mullins' associate
 * Zombies with a snake pit

Culprits

 * Harriet Mullins and her associate