I read Levithan's young adult novel Every Day this summer while on vacation in Malta (which was experiencing its worst heatwave in 28 years). In the comfort of our air-conditioned hotel room, I could not stop reading the adventures of "A." Imagine waking up in a new body every day, one that you can only occupy for 24 hours and then it's on to the next body at the stroke of midnight (like Cinderella on steriods!) Levithan does a masterful job creating one life after another for A to inhabit (always the same chronological age, but that's the only similarity). Every size, shape and gender is a possibility in A's world. Then he becomes Justin and he meets Justin's girlfriend Rhiannon. As A struggles to find a way to stay in touch (and in love) with Rhiannon, his life becomes even more complicated as he finds out that there may be others like himself, doomed to shift from one life to another.
Book 2 - Another Day - is not a sequel, but rather a companion novel from Rhiannon's point of view. It was interesting to see the same events from another perspective, although personally I think Levithan did a much better job of capturing A's voice than he did that of Rhiannon. It seems clear at the end of Another Day that this is bound to be at least a trilogy, so stay tuned!