My son displays an interest in the Moon, so I'm trying to track down an old kid's story/novella/book that takes place there. I have a feeling it was Asimov. Longer than a short story, shorter than a book?
Kid goes to a Moon base where his dad works. I seem to recall there is a military base some distance away. There's a spy... is it his mysterious dad?!
The one scene I recall clearly is the boy and his dad end up locked in a closet with a pan of chemicals giving off arsenic or cyanide. This proves his dad is not the bad guy, while also making it obvious who it really is.