Twelve-year-old Jamie Gabriel lives a completely normal life. His dad sells insurance, his mom is a stay-at-home mother, and he has a paper route which he rides on his bike. It's all very mundane and average, in suburban Indianapolis, right down to the day that he sets out to ride his paper route and never gets to school, or back home at the end of the day. Paul and Carol Gabriel, the parents, are frantic at first, but as it becomes apparent that the police are essentially not going to strain themselves to find what they consider a runaway, their emotions turn to anger and frustration.
After a little more than a year, Paul hears about private detective Frank Behr, who used to work on the local police department. Behr has demons of his own, baggage that he carries that has dented his personality pretty badly, but once he takes the case he doggedly follows the thinnest of leads, searching for clues and discovering information that the police haven't even imagined existed. As he works his way through the case, Paul wants to help, and eventually Frank allows him to.
I found this to be one of the better detective novels I've read in recent years, certainly the best among debuts. It's suspenseful, intelligent, and full of interesting characters, and the plot just rolls right along. I enjoyed City of the Sun a great deal, and I recommend it highly. A great first book.