Sneak Peek a new clip of footage, plus images from the next episode of "Doctor Who" titled "The Zygon Inversion", airing November 7, 2015 on BBC America:
"...trapped in her own mind and under attack, can 'Clara' turn the tables on her 'Zygon' double?...
"Meanwhile shapeshifting Zygons are everywhere.
"With 'UNIT' neutralized, only the alien 'Doctor' stands in their way.
"But how do you stop a war?
"And what can the Doctor do to save his friends?..."
Click the images to enlarge ...