I managed not to write anything about the first seven spidodes of the current series but I'll hopefully be able to make an effort for the rest of the episodes.
But what an episode to begin with! Let's put it this way, this is not an episode to use as an introduction to the show.
The last episode shown was 'A Good Man Goes to War' where there was a cliffhanger of sorts. Amy's baby had been taken by The Silence to be used as a weapon and we discovered that Melody Pond = River Song so Alex Kingston was actually Amy and Rory's kid.
The new episode kicks off with the introduction of Amy's old childhood friend Mel who we have never met before. In an enterataining sequence we see her being a bit of a trouble-maker at school with young Amelia and Rory. She turns up with a gun and hijacks the Doctor and the Tardis, and forces the Doctor to take her to 1938 Berlin to kill Hitler.
This is where things get a little bit complicated.
Because also in 1938 we meet the miniaturised crew of a human-shaped space ship tha travel through time to punish war criminals. They are here for Hitler but get sidetracked when the Tardis delivers a better catch.
Mel gets shot and STARTS TO REGENERATE! Next thing we know Alex Kington is back.
Mel is Melody is River. 'You named your daughter after your daughter,' the Doctor tells Amy.
This River does not yet call herself River so we've gone right back to her first meeting with the Doctor. Probably.
And now things get complicated. Again. Because Mel/River tries to kill the doctor and ends up poisoning him with her lipstick. But that actually makes sense if we remember that The Silence took her and programmed her to do that.
In the end Mel/River uses up her regenerations to heal the Doctor, although we are reminded that he will get killed in Utah by the Astronaut in the lake.
So overall it was an entertaining episode that answers a few questions about the River Song saga, but obviously raises a few more. I expect it will be worth rewatching when the series is finished in a few weeks time.