The story so far: It's 1901. Martians invaded one year ago. But that's not the weirdest thing. I thought my Uncle had died on the moon. Then last week he walked into the house as if nothing had happened!

He has no memory of the Martians, or the moon. Did I come back to a parallel world? Grauben's fascinated, and keeps asking him about the past. I don't know why. Here he is with another history book.

Should I pretend I'm interested? But we should be talking about Mars! What can I do to get through to him?