Well, we can now add reckless child endangerment to The Doctor's list of crimes.
He took Clara and her two juvenile charges (why, God, why?) to the universe's largest (abandoned) amusement park, 'Hedgewick's World of Wonders', and even though he sensed something was wrong he wandered off and left them alone to be grabbed by the metal beasties waking up on the planet.
After the kids get nabbed by cybermites, The Doctor gets infected too and much of his role in this episode is split between him facing off against a cybercontroller (who has taken over his mind) in a hive mind and trying to beat his 'alter-ego' in a game of chess.
Throw in a squadron of disgraced soldiers, led by Tamzin Outhwaite, dispatched to the planet to keep them out of the way; some interesting backstory on a massive cyberwar and humanity's missing emporer; and an army of super-advanced
Which is surprising given that it was penned by Neil Gaiman, although I fear the heavy booted involvement of showrunner Steven Moffat with the utterly pointless inclusion of the children Angie (Eve de Leon Allen) and Artie (Kassius Carey Johnson). Artie was just about bearable, but Angie was a stereotypical annoying brat - highly reminiscent of Kelsey (Porsha Lawrence Mavour), the character axed - and never spoken of again - from The Sarah Jane Adventures after the pilot.
My theory that this latter half of the season was sequentially homaging past Doctors appears to have fallen down with this - which should have been a nod to The Sixth Doctor (unless it was the whole duality motif of The Doctor versus Mr Clever The Cybercontroller).
In fact it managed to mention, and picture, all his previous regenerations and if it was lifting visual cues from previous Doctors, once again, it was The Second Doctor who came through most clearly: from the theme park's representation of Earth's moon as a stage set to the shot of the cybermen awakening from their tombs.
Of course, there's a degree of Seventh Doctorness as well with the emphasis on chess.
Sadly, as the series draws towards its finale, it is running out of steam - despite Gaiman's input - and Nightmare In Silver was quite a damp squib, with few (if any) surprises (and a major deus ex machina borrowed quite freely from Hitchhikers Guide To The Galaxy - "do you know why I want a cup of tea?").
Even the super-duper, slick, redesigned cybermen - constantly adapting to new threats in a very borg-like way - were annoyingly inconsistent, given that the first we met could move like The Flash, how come none of the others did this? That might have made the massive cyber army more of a threat.
Next Week (The Finale):
Obviously we're NOT going to learn The Doctor's name as whatever Moffat could come up with, be it Bob, Bill, Mort, Mxyztplk or a random jumble of squiggly lines, could NEVER beat the mystique of not knowing. My personal speculation of the subject of The Doctor's "biggest secret" is why he left Gallifrey in the first place.
Prequel For The Name Of The Doctor: