We've all read enough/watched enough Body Swap stories to know how this goes down. Henry wakes up in a body that's not hers, makes her way to the Bureau, to try to get her team back.
She has to convince more than a few people that's she who she claims to be. The fact that there are people who work there who have the ability to tell if she's telling the truth, should make things easier -- and probably does.
McGuire doesn't let things get too bogged down with this identity test. Between humor, one seriously creepy version of Moaning Myrtle, and the sense of impending doom, things keep moving well.
The plot didn't advance a lot, but what little bit that happened was much needed and a positive sign for the next installment. Except for the last few paragraphs, which will hopefully be the first thing addressed in episode 11, because that's just not okay.