Parts: 2 (45-minute)
Writer: Steven Moffat
Airdate: 04 June & 27 August 2011
Production Code: n/a

Doctor: eleventh
Companions: Amy, Rory

Creature Feature: Cybermen, Silurians, Judoon, Headless Monks
Special Guest: River Song

Story: The Doctor discovers that Amy has been kidnapped, and is desperate to track down her abductors and find her. His efforts, spanning time and space, lead him to assemble a small army of allies, dedicated to helping him track down Amy, infiltrate the enemy, and rescue her unharmed.

But what the Doctor doesn't realize is that his newfound enemies are assembling an army too... one devoted to the specific cause of destroying the Doctor forever.