In which I find more reading material

I just looked out my window and saw a lake. It was in the middle of the city, but I could see no streets leading to it, no paths that ended at its shore.

I just got my camera, but now I'm looking again and the lake is gone. Replaced by a row of buildings, brick and mortar.

Earlier today, I received another message from A. At least, I think it was A. It was different from the others. Not a Biblical quotation this time. A riddle.

First, I found this slipped underneath my door:

It's a copy of one of my early stories. Someone took an image of it and then duplicated it another page. The sheet was fine - not rough like the pages of the digests I write for.

And then on the back was this:

Who is Joe? And who is the Man in the Mask? Or is this riddle simply hypothetical in nature?

And why is A suddenly leaving riddles? Strange.

My food supply is running low. Will they leave me more food somewhere or do I need to answer this riddle first? The more things A leaves me, the more I don't understand them or why they are doing this.

Sam Norton