Prefect finishes to this sci-fi trilogy with it being a constant page turner no matter if it is battle scenes or the quiet dips in between. The YA humour is great with wonderful one lines that you feel like the main character is talking to you. The concepts explore and well explored in most cases maybe near the end the last one about the hearts was a not as fleshed out but it could say it is open to a spine off series to explore that more. Who know maybe Q does.