Book Description: Driving home from a high school math competition, the last thing Emily expected was to get trapped in a caved-in tunnel. Yet when the dust settles, she soon finds there’s even more going on than a math nerd could have calculated. Only a few other cars survived the cave-in, leaving her trapped with a team of plumbers, a cranky old man, a Governor, and a family of five. An older boy named Chris also managed to survive the cave-in…but his bright blue eyes seem to be watching everyone just a little too closely.
As the hours tick by and the water runs out, the survivors struggle to wait for the rescue team. But Emily had seen something just before the tunnel collapsed, something that makes her realize that this cave-in was no accident. She is trapped with the killer of hundreds of innocent people–with nearly a mile of solid rock blocking every exit.