Mara parked her car at a spot on Southeast Division Street near the entrance to the off-leash area of Mount Tabor Park, a four-acre patch of scrub and trees sloping toward the road separated from the rest of the park. She had been concerned about finding an empty parking space. Since most of the facilities—picnic areas, tennis courts, trails and amphitheater—were on the northern end of the nearly two-hundred-acre park, it was unlikely much parking was available on the south side where planners had placed the dog park, but she had been wrong.
A couple dogs and their owners dashed about along the grassy rise, one pair tossing and chasing a ball, the other chasing each other and jumping about. Farther down the sidewalk, two boys, maybe ten years old, huddled together. As she approached, they
