Intro: If at first you don't succeed, try, try again. That might be the motto of the perseverant Cybermen. And their plan, if they were to Telos about it, would include trying to change history, for Cryon out loud. It's "once more unto the breach, my friends," as The Doctor and Peri attempt to blunt the "Attack of the Cybermen."

Outro: Join us next week when The Doctor gets to star in a video nasty, which is not necessarily a great honor. The blanks will be filled in in exquisite detail in the course of "Vengeance on Varos," next Sunday night at 11. [source: ChicagoEpguides]