Obedience by Will Lavender 2008 (287 pgs)
Students in a Logic and Reasoning class are asked to solve a hypothetical kidnapping before it becomes murder. The plot begins simply, but soon builds to a puzzle of cunning intricacy. Supposedly fictional characters start intruding on real life, and there are hints of a decade-old real murder nearby that bears striking similarity to the fictional case. Soon, three of the students (along with the reader) start to question what is real and whether there will soon be another murder. A great puzzle book that left kept me in a state of brain-buzz on a par with a good sudoku or crossword puzzle.