Intro: Tonight, in the England of 1925, Nyssa meets the fiancée of Lord Cranleigh. The women are startled to see they are virtually twins in appearance, which leads to a practical joke, which leads to, well, we can't give away the game, can we? You will soon be apprised in the unfolding of the "Black Orchid."

Outro: Next week, in a vast cave system beneath the surface of 25th century Earth, a group of paleontologists will meet a terrible fate. Be with us next Sunday night at 11 and experience "Earthshock." [source: ChicagoEpguides]