The mythology is arguably the coolest thing about TEARDROP, but it's also the only cool thing about TEARDROP. The first 100 pages or so is pretty lackluster as all the main characters trot in and out and Eureka (who is called Reka which never stopped conjuring 'stink' in my mind every time I read it) moped through her admittedly unpleasant life in the months following her mother's death. After that the Atlantis twist started to be revealed via an ancient Atlantean diary. Unfortunately, the legend of Atlantis and the new mythology Lauren Kate created wasn't enough to keep the characters and plot afloat.
The characters were probably the anchor that sank TEARDROP. They just weren't interesting despite a few of them having potentially interesting lives. And the three characters involved in the love triangle (Reka, Briggs, and Ander) are plagued by insta-love, destiny love, and a lot of other cliche tropes. Reka was frustratingly indecisive and swept away by appearances when she should have been freaked out. Ander was as captain cardboard as they come and his complete puppy dog devotion bordered on creepy. Briggs was the long time best friend who was not-so-secretly in love with Reka (although she was oblivious) and relied way too much on the back story of their relationship instead of any meaningful interaction in the book to win me over.
There were a few semi interesting twists towards the end, and the Atlantis mythology became more prominent which was nice, but TEARDROP isn't anything more than a pretty cover and a story that doesn't come close to living up to it's subject matter.