The episode will last 45 minutes, and finishes at 9.10pm. Before the Flood, penned by Toby Whithouse, will air on the same day on BBC America at 9/8C.
On a remote Army outpost, a fearsome alien warlord - the Fisher King - sets in motion a twisted plan to ensure his own survival. The ripples will be felt around the universe. Is this chain of events inevitable? And can the Doctor do the unthinkable?[Source: BBC]