Tonight's Doctor Who...

...was a good conclusion (for now, anyway) of the story started in the previous episode, but I'm sure there will be more.

Some nice ideas, such as (rot13) gryyvat gur vzzbegny tvey gb xrrc na rlr bcra sbe Wnpx Unexarff (/rot13) and (rot13) fubjvat hc va gur onpxtebhaq bs n cubgb ng gur raq (/rot13). It would be nice to know (rot13) jung unccraf gb gur uvtujnlzna (/rot13) but I suspect that all of this is going to end up as story arc. Looking forward to further developments anyway - probably spoilers in the comments...