The bunker diary
Six people, all from different backgrounds mysteriously find themselves in an underground bunker where there are no windows and no way to escape but the elevator that brought them there. The book is the diary that the main character, Linus Weems, keeps in his time trapped in the bunker. In his diary, we witness the arrival of the other "inmates", their struggles and their fight to figure out where they are and most importantly- to escape. At the end of the story, Linus dies.