Flatline
Doctor Who: Season 8, Episode 9
Clara discovers a menace from another dimension while she is separated from the Doctor; with the Doctor trapped, Clara must defend against an enemy that exists beyond human perception.
Show: Doctor Who
Writers: Steven Moffat, Chris Chibnall, Toby Whithouse, and more
Air date: October 18, 2014
Director: Douglas Mackinnon
Executive producer(s): Steven Moffat; Brian Minchin
First broadcast: 18 October 2014