Moffat missed the chance at a character and exchange that would have made my year.

'Missy who are you?'

'Oh you know who I am..do try and keep up missy short for Mrs..'

'Oh my god! Your the wife!'

'Yes and your in trouble snogging all those young earth women and your tardis nor to mention not coming home in 600 years!'

'Did the fact there was a time war escape you?'

'No and where's my granddaughter? A quick trip to earth you said back in time for tea, 14 regenerations and thousands of years later I have to come and find you!'

Doctor to camera 'not even the sonic screwdriver will get me out of this!'

This made me smile

Maybe The Master was married to The Doctor and is Susan's grandmother?