Way back in elementary school, I discovered that our library had several sets of book that all kinda looked the same on the shelf. There were the tantalizing red spines of the Biographies - and I burned through those like a third grader hooked on non-fiction. The other series that caught my attention had blue spines and took up a whole shelf in the fiction section. It's that series that has led to this puzzle.
It should be relatively easy to determine the coordinates for this cache, even for those who have never read one of the books in the blue-spined fiction series.
I was searching for the clue in the embers of the fire started by the secret agent on Flight 101. As I raked the embers with a large stick, I uncovered the shattered helmet of the pilot.
There was a sky blue frame enclosing a painting entitled "Mystery of the Desert Giant". I did not understand how this tied the demon's den to the tower treasure, but I was determined to keep searching since I now had the coordinates to the location of a geocache.