Thanks Penguin Teen and BookishFirst for the ARC, these opinions are my own. This thriller will have you questioning everyone! Ruby is on a class trip to Paris. Her classmates include the guy she likes Sean, her best friend Val, the valedictorian Olivia, and her ex-best friend Selena. Ruby is hoping to get some cool footage for her YouTube channel where she explores hidden gems. But when her best friend Val sneaks out on the first night she may not get her chance if she gets caught. Ruby decides to go after her and bring her back, along the way she runs into Selena and Olivia, who both end up going with her. When she finds Val, Val’s not alone. Her and this guy are going to go search the catacombs below Paris. Ruby’s torn between going and not getting caught. Eventually the four end up going this guy. But they quickly become lost and someone or something may just be looking for them. Meanwhile Sean is desperate to find Ruby and will let nothing get in his way, not even the French law enforcement. Can Sean find Ruby? Will Ruby and the others find their way out? I love that you have this adventure thriller of this 4 girls and a guy lost is a dark endless maze and on top of that you still have the drama that comes with high school students! Also add in a dash of romance! Plus a pinch or mystery/thriller as well! This might just be my favorite Diana Urban book yet! Fast paced and will have you so hooked you won’t be able to put it down! Plus you’ll constantly question everyone’s intentions add it a dark cramped space and it just adds to the distrust! Highly recommend if you like books that keep you on the edge of your seat!