"Holmes?", Doctor Watson stood before the filing cabinet holding a green pillowcase with tiny yellow flowers.
Sherlock Holmes briefly flickers his eyes towards Watson before resuming his position staring at the mantelpiece.
"Should I ask why there is a pillowcase in the top drawer, filed under...D?"
"Ah, that", Holmes answered, "that belongs to Mrs Hudson's Aunty Doreen. She's a little absent-minded and placed it among our mail in the front hallway.
I thought you could return it to her when she next comes to visit."
"Oh!" Doing a double-take, Watson began,
"But you never file...Never mind.