Flatline was certainly a good story. Doctor-lite, reminiscent of Blink, though reminded me of audio The Condemned. Jenna really had a chance to shine, being the Doctor for most of the episode and having the brilliant plan to bring about the 2D monster's defeat. The monsters were excellent, a great premise to have 2D monsters. And quite amusing having the tiny TARDIS and the Doctor having to crawl along. And we see Missy again. Was she woman in shop? Just another two weeks to finale.