This may contain spoilers but really, please read them you will save yourself some hassle.
I think this episode was poop, really it was terrible :(
Super master AWAY!
Becuase you know when you come back from the dead you can jump really high, fire lightning out of your ass ... sorry hands and become really hungry for no reason.
The entire thing could have been done in 20 minutes and been a much better story thinking abuot it actually there's only about 20 minutes of story in here (maybe slightly less) that's stretched painfully into one hour.
Dr Who team, you have managed to actually make me dislike David Tennant as the doctor slightly, just becuase of how incredibly poor this episode was.