Very good stuff, I wasn't really a fan of Courtney and the moon being an egg plot was admittedly a bit silly but it didn't really matter in the end, it was all window dressing for the moral dilemma.

The beginning with the whole base under siege and the and the dilemma and subsequent fall out between The Doctor and Clara made for some fantastic scenes between Capaldi and Coleman. Think that's the moment that will eventually resulting in Clara leave the show so it's nice to see something so significant in a mid-season episode and I think you could understand both characters point of view.