Intro: A sinister, irresistible force is threatening the entire Western Hemisphere. It is confronted by The Doctor, U.N.I.T., and the World Ecology Bureau. Will their combined forces be strong enough to prevail? That question will be answered in the conclusion of "The Seeds of Doom."

Outro: Next week, The Doctor is challenged by the Mandragora Helix. In the course of that contretemps we will learn some of the mysteries of operation of his time and space machine, the TARDIS. Don't fail to tune in next Sunday evening at 11 for "The Masque of Mandragora." And here is an ancillary observation which may pique your interest: Blakes 7 returns to Channel 11 tomorrow night beginning at 11:30. [source: ChicagoEpguides]