As with all of Diana Urban's books, I really enjoyed this one. This semester at sea turned murder mystery has a intriguing cast and plenty of drama. I really liked the protagonist, Jade, although she is definitely an impulsive decision-maker and sometimes this book had me yelling at her. But she's a wonderfully complex character and has just the right amount of unreliableness that to keep me from feeling like I knew exactly what was happening. There is mystery around all of the characters and I liked following Jade around to figure out what was going on in this murdery ship! And the book had what started to look like a predictable twist but then turned into an actual surprise twist, and the very last page of the book had an ending I was absolutely not expecting. Any fans of YA thriller will love every single one of Diana Urban's books, and this one continues to be on par!