Doug and Tony land in 1519 Mexico, where Cortez is looking for a golden mask. Their archaeology expert back at the Time Tunnel insists that they retrieve the mask, which he has been searching for for twenty years, or he will not help them.

Cast: James Darren, Robert Colbert, Teno Pollick, Lawrence Montaigne, Anthony Caruso, Whit Bissell, John Zaremba, Lee Meriwether, Peter Brocco, Abel Fernandez, Rodolfo Hoyos Jr.