Diana Urban's Under the Surface is full of exhilarating action, but will also have you cringing over the terrifying thought of being trapped beneath the Earth surrounded by the dead. The female main character, Ruby, is a wannabe travel blogger who has her sights set on exploring the Parisian catacombs (and building her online following) while on her high school trip to France. On the other hand, the male main character, Sean, just wants to spend a week in Paris with Ruby. Both of their trips take a turn for the worst when Ruby and three other girls end up missing. Trapped beneath the ground Ruby and the others quickly end up in a situation that has them fighting for their lives. Unexpected twists and turns pop up around each bend they take in the labyrinth of tunnels as they fight to try and find their way back to the surface. With Sean working tirelessly to find them from above, this thriller will keep you reading late into the night!