Franz Kafka's "Der Prozess". The author describes the life of a mid-aged bureaucrat, Mr. K, who one day gets waken up by two policemen, stating he was arraigned. Mr. K then starts to look for his complaimant and the actual charges he's been arraigned for, but whenever he's near to get an answer, he seems to become shaken off.

As much to the plot.. I personally LOVE Kafka's books, he always creates a depressive mood in his books which he's eerily able to project on his reader, so the books's themes and contents may also keep you busy afterwards. =)