The episode will last for 45 minutes and will finish at 7.45pm, followed by The National Lottery Draws.
The finale, penned by showrunner Steven Moffat, will air on the same day on BBC America at 8/7C.
Clara is summoned to an impossible conference call, alerting her that the deadly Whisper Men are closing in on Vastra, Jenny and Strax.
Someone is kidnapping the Doctor’s friends, leading him toward the one place in all of time and space that he should never go. It’s a deadly trap that threatens to unravel his past, present and future…
[Source: Radio Times & Digiguide]