CURTAIN

I found a curtain in my bathroom that has a stain.  It took me a while to figure out why it had a stain.  It is a large stain.  After a long investigation, I figured out that during a particularly strong windy rain storm, some water must have leaked in through the window and pooled in the curtain.  It then left a stain when it dried.

I have no idea how to clean it or how to get the stain out.  I also have no idea how the water got in but that can be the only answer.

Until tomorrow...