Matthew and the Stone (Stone #1)

Following the unexpected death of his father, Matthew Brandt is granted a scholarship at an exclusive high school in northern San Diego County, California. He is exceptionally bright and advanced in school so must deal with being over a year younger than the other students in his junior class. He tries to figure out how to fit in with the ultra-wealthy friends he makes during a class trip to France. Then he discovers a stone with strange powers one day while practicing his martial arts forms. He has to figure out how to use those powers and to what purpose.
This is the first book of a new series that follows Matthew as he becomes entangled in a number of cases that he helps to solve.