It came to my mind reading the riddle of the sphinx in Gof; when my eyes felt on the little rhyme and on the fact that firstly Harry thinks that Hermione is the one good to solve riddles...
This time she gives a different, much more revealing solution. And yes, it 's about our favourite Spy ;-)
These are the summary and the link to the story:
"...the end of the end…" she echoed then, and wondered: "How many ends are there in an end?" A little story through exactly 700 "hard-to-find" word and enlightening quotes from the Riddle of the Sphinx in Goblet of Fire. Hermione gives a new solution.
www.fanfiction.net/s/6173167/1/