Woe, disappointment and spoilers lie ahead.
Unfortunately, after a prolonged wait following an unusual mid-season break of a few months, Dr Who returned with an episode as anti-climactic as can reasonably be imagined. It wasn’t awful. There was no Dobbie the House Doctor moment (cf the Master’s first, and horrendous reappearance), but it was just a bit tedious.
The Doctor, Amy and Rory together with a stranger they’re immensely close to (and we’ve never met before called Mels) take the TARDIS to Berlin in 1938. Mels gets shot by Hitler (imprisoned by Rory in a cabinet) and regenerates, as she’s River Song (something her parents managed not to notice). She then assassinates the Doctor, poisoning him with lipstick.
It’s quite hard to write up, because although there is a justice robot that effectively has a chameleon circuit and is populated with miniaturised time-travelling humans, nothing much happens. The Doctor eventually dies, and River saves him by sacrificing all her future regenerations, but there’s no sense of tension, only a few (not especially good) comedy moments early on and no vicious villain (Hitler’s in briefly and is a character of light relief rather than tyranny).
Almost the only thing of interest is that we learnt that the Silence is not actually a species, but a religious order.
Anyway, let’s hope the next episode’s better.