Noises in the Night

I was woken last night about 2am by a strange tapping. It went on (intermittently) for what seemed like a long time. Most things seem like they go on for a long time when all you're trying to do is sleep. It was hard to tell where it was coming from. Possibly next door, possibly outside. To me it sounded like the sort of sound that would be made if someone was chipping the outside wall with a chisel. But I had a look out the window and there didn't seem to be anyone there. And there was no damage this morning.

Maybe it was the people next door assembling late night flat pack furniture. Some people do odd things like that.

Or maybe (and this is what I hope) it was a ghost. That would be way cool.