Sitting at work, and out of the corner of my eye I notice vague movement in the boss's office - which as she's not here and it's locked and in darkness, is kind of vaguely worrying. I eventually realise that it's people coming in to the building through the main entrance, which I can partially see through a little bit of window, but obscured by blinds, thus weirding the effect.
I mention this to a colleague, who says, "it could be the ghosts."
"Could be worse," says I. "Could be clowns."
"Oh, have you see the latest Sarah Jane Adventure?" says m'colleague.
Yay! Fandom invades the office...