I think the strangers the lady is talking about is the Doctor and his companions.
That crack looks like the one that will eventually swallow up Rory Pond.
That’s the jankiest transporter effect I’ve seen.
“There’s been a confusion in time…” How does time get confused?
Good thing the Doctor didn’t go into the crack in the wall. He was very close to joining Rory.
Everyone knows how to work the TARDIS, except the Doctor. She’s never been in it before!