Planet Of The Ood

Episode Title:
Planet Of The Ood

Written By:
Keith Temple

Starring:
David Tennant - Doctor
Catherine Tate - Donna Noble

Alien:
Ood, Ood Brain

Air Date:
19th April 2008

Synopsis:
The Doctor takes Donna far into the future, to her first alien world. But on the planet Ood-Sphere, they discover terrible truths about the Human Race. As the enslaved Ood struggle for survival, a secret buried for 200 years threatens to rise up and engulf them all.