Miss Fiona Featherduster had knocked on my office door bright and early this morning. She was all weepy 'cause her grandfather had just died. He was quite the art collector, but he'd left her just one dusty painting in the attic. She wanted to know if it was worth anything.

"It might be," I said. "Why don't you...

...show me a photo of your mystery painting."

...tell me about grandpa's collection."