Perfection! I absolutely loved how mysterious this story is, and how astonishingly unique it is. We have no idea why or how Silas and Charlie have lost their memory at the same time after years of being in love with each other, but I've never been so excited trying to put together the clues and pieces before a story reveals the answer. 
 I have a few guesses but I'm onto book 2 to read the next part to see what the hell else is about to happen--what a cliff hanger!