The current series of Doctor Who continues tonight at 8:15pm on BBC One and BBC One HD, read on for the synopsis to the eleventh episode:
DARK WATER - by Steven Moffat
In the mysterious world of the Nethersphere, plans have been drawn up. Missy is about to come face to face with the Doctor, and an impossible choice is looming. "Death is not an end" promises the sinister organisation known only as 3W - but, as the Doctor and Clara discover, you might wish it was.
The episode will be available to watch on BBC iPlayer soon after broadcast, Doctor Who Extra will also be available to watch on BBC Red Button and online. The series concludes next week with Death in Heaven - more information coming then.