One of my favorite fanfic writing prompts is to fill in a blank left by a canon episode. In the case of White Collar, the writers gifted us with a number of tantalizing questions. I've already written about some of them. The origin of Neal's interest in origami and the backstory for his fencing ability were both in An Evening with Genji. I explored Peter's interest in astronomy in The Woman in Blue. In my latest Caffrey Conversation story, Scotch on the Rocks, I picked another canon element—the McNally Solitaire.