OK, a proper review will have to wait until after next week’s series-closing, extra-long episode.

But wow. I mean really wow. Quite apart from the expected return of Davros with loads of Daleks, Captain Jack, Gwen and Ianto from Torchwood, Sarah Jane and Luke, Martha Jones and her mother, we also had the last return of former Prime Minister Harriet Jones!

And for the benefit of anyone who hasn’t seen it yet, all I’ll say about the content is

Best. Cliffhanger. Ever.

Really. No, really. Everyone is in serious trouble and something completely unanticipated is happening. Getting out of this one is going to be tricky…