An energetic and flamboyant trader known as the Taybor arrives on the moon to trade with the Alphans. Commander Koenig is interested in a drive the Taybor has that could help his people get back to Earth but is unhappy when he discovers that the Taybor want a high price in trade - Maya!
Elenco: Martin Landau , Barbara Bain , Catherine Schell , Barry Morse , Tony Anholt , Nick Tate , Prentis Hancock , Zienia Merton , Clifton Jones , Anton Phillips .