I really love different spins on mythology and this story was no different, especially since I haven't read a story with sphinxes yet. Moving on to Hope, I can say that I did actually care for her. Her cautious, brick-walled personality is easily explained due to only ever really having association with very few people.... Like three people. I also was appreciative that the author made her out to be a doesn't-take-no-shit type of girl.
As for the rest of the story, some instances didn't fully make sense, but they were also easily overlooked by the mild action that kept the story going at its fast pace. It's quite upsetting we didn't get to "see" much sphinx action, and knowing that there may be another book after this, I really do hope that there's more of it.
The ending was okay, nothing really much to say. It didn't leave me speechless, but it left enough open to see that there's something coming later on in the year, if not, next year. I look forward to reading more and seeing where the author will lead us and Hope.