Here it comes! The fly! "The last summer fly" as described by JM Sanjuán in "Réquiem por todos nosotros".
The vibrating noise of the fly disturbs the sanitised atmosphere of the hospital where the last victims of an accident are struggling between life and death. The fly is big, noisy, takes the whole space and shouldn't be there, or anywhere else as it is the end of summer and all of the others have gone, but one.
... And yesterday, bzzzzzzzzzzzzzzzz, there it was, making itself at home and being as annoying as a flies can be when not invited. This morning, it was still around. I can't bring myself to killing it. Maybe, it's time for a pet... now where's that litter tray?