The Bright Side

Dee (standing, shocked, still reaching out to where the unknown person was a second ago): ...
Dee (clasping his hands around his head): aaaaaaah...
Emily: Dee? What... what just happened there?
Dee (collapsing into a crouching position still with his arms over his head): aaaaaaaaaaaaaaaoh god oh god oh god oh...
Emily (moving to him, putting her arms around him): Dee!
Dee: oh god
Emily: What happened!? Who was that?
Dee: Someone from the future...
Emily: What!? Who?!
Dee: I ... I don't know. I haven't ... met them yet.
Emily: But they were another time traveller! And they were selectively invisible! Was it - was it someone like you!?