Episode 23 Carl Sagan describes Barsoom in the Cosmos episode, “Blues for a Red Planet.” Part One of Hardcover Theater's 2006 stage production of “A Princess of Mars.” Written and directed by Steve Schroer. Jami Rassmussen as John Carter. Amber Swenson as Dejah Thoris. Jesse Ray as Tars Tarkas. Terri Elofson Bly as Sola.