Kaitlyn Arquette, daughter of 'Hotel for Dog author Lois Duncan, was killed driving to a friend's home by someone chasing her. Shots from the pursuing vehicle hit Arquette twice in the head. Yet the shooter sped away. The case has been dubbed a random drive-by shooting. Now, has this mystery been solved? In July, a man confesses to University of New Mexico police that he’d committed some murders. Does this include Kaitlyn Arquette?