Pentagram

"His Return" is the sixth episode of the fifth series of Doctor Who. It first aired on 14th August 2010.

Synopsis
Soon... the Earth will cease to be blue. - The Beast.

The New Beast has taken full control of the Babel and now plans on infecting the world with his evil. The Doctor, Martha and Kale are alone, helpless and terrified as the greatest evil imaginable, finally gains full power.