[...That question is a little harder to explain.]

I can tell you how, but not why. [Right, he's got some clothes on now. Let's go talk to this woman properly]

We were all brought here by an unknown force. People simply call them shifts, abnormalities that happen that can alter the environment around us or ourselves. [He's at the doorway now.] Unfortunately, now that you're here, it'll be difficult for you to leave.