Cold Blood (2) (S05E09)

A pivotal moment in Earth's history arrives, heralding either a new era of peace or the onset of its ultimate conflict. The Doctor confronts his toughest challenge as he fights to prevent Alaya's chilling forecast of a massacre from becoming reality. Simultaneously, the fate of the imprisoned Amy hangs in the balance, raising questions about whether Tony and his allies can be relied upon. Time is of the essence as the stakes skyrocket in this gripping episode.