The BBC have confirmed that episode three of Series 9 and part one of another two-parter, Under the Lake, will air on Saturday 3rd October at 8.25pm on BBC One in a slightly later timeslot than usual.
The episode will last 45 minutes and finishes at 9.10pm. Under the Lake, penned by Toby Whithouse, will air on the same day on BBC America at 9/8C.
When an Underwater Base comes under attack, the Doctor and Clara must save the frightened crew and defeat an impossible threat. But what is behind these terrifying events? And can they really be haunted by ghosts?