[Rob!]

Wow.

I'm not entirely clear on everything that went on - why couldn't Ashilder (or however the hell you spell it) remove the tattoo from Clara? And was that whole "I guarantee the safety of Clara Oswald" thing just meant to be dramatic irony?
Good episode though, although Christ knows what they've got planned for the next two episodes if they're killing off the companion before the finale has even started.