Release Message:  As Rose (Billie Piper) battles the murderous Ood, the Doctor finds his every belief being challenged to the core, as the Pit beckons.

Description:  As Rose (Billie Piper) battles the murderous Ood, the Doctor finds his every belief being challenged to the core, as the Pit beckons. With the planet threatening to fall into the black hole, the Doctor must make the ultimate sacrifice.