Board Thread:The Panopticon/@comment-4028641-20151011010956/@comment-1783865-20151013113449

Danniesen wrote: If this explanation is for Clara, which is much likely (almost bound to be), then it will have to happen after the events of this episode as she's not in the TARDIS before those events. It could however also have happened pre-Under the Lake, if this is indeed for Clara.