Re: Osgood is back !
Osgood got killed off by Missy last season, so why is she back now?
I mean, I always liked Osgood and was disappointed when she was killed, but you can't just blatantly ignore it and shove her back on next time you want to do a UNIT episode.
I'm guessing that they will retcon it so that the Osgood who Missy killed was the Zygon one, and not the human one.