Well, I am a second person who has not watched Castle. In fact, I think I have only ever heard of it on LnC related discussion boards.
However I followed this story just fine.
Someone asked "where are Lois and Clark's children." I assume they have them, but they just never came up. I will pretend they were visiting their grandparents when Castle and Beckett came over.
The last part of the comment is part of the phenomenon of "death of the author" where we assume the author has not truly controling say in their own work.
