Spoiler Alerts-some references to key events in this review. This book didn't get me hooked until about 3/4 of the way through, when Quinn, Tucker's best friend, is killed. I enjoyed the description of the idyllic slow moving island they all live on, but once SYLO invades and there's talk of aliens, I lost momentum. I've read the Pendragon books by the author, which I enjoyed and prefer to this series, but there are some big questions introduced in this book that kept me interested throughout. My chief complaint with all these YA adventures is that the characters sound at LEAST 16, but are described as 14 or younger. Ridiculous, I say. I just imagine them as they sound (about 17 or 18), and in movies older kids are always chosen, aside from Harry Potter. In this series, the use of sarcastic comments like "Seriously?" and Kent's put downs and selfishness are irksome, but luckily they disappear for the most part in the next book. I do like the adventure and mystery in these books, and the way good and bad aren't so straightforward, as often occurs in real life.