Severely injured on a case, Page retired from the FBI to become a professor. But now his friend has been killed by a sniper in New York and Page's extraordinary mind is needed urgently. The shot that killed the man should have been impossible: in the middle of a blizzard, down a busy New York avenue, into a moving car. Only Page can work out the science behind the shot, the geometry that reveals the killer's location. Meet Lucas Page: A Detective who sees crime from a differnt angle.