I guess I need to bone up on my knowledge of ghost stories.

From the Guardian:

It's that time of year again: come tonight, the pumpkins will be lit, the apples toffee'd, the denizens of the spirit world will be on the prowl and those of us who have yet to pass beyond the veil will be cowering behind our sofas, under siege from a ravening army of chocolate-smeared pre-teens. Why not smuggle your laptop back there with you, and while away the time with our quiz on ghost stories?

Arg.  I only got a 5/10.