investigators say on a sunday afternoon, bradley turner and his wife christy were driving in their toyota suv in james city, north carolina, when this chevy pickup, driven by josh berry with his friends nathan and shaylee inside, may have cut the turners off. >> he got up beside me, leaned out the window, pointing at me, saying he's going to kill me. >> reporter: the chase was on. for 30 to 40 minutes, with their 4-year-old child in the backseat, the turners tailed the young trio. josh berry says he tried to lose them, but they followed him all the way to his friend, nathan's, driveway. >> when we see him getting out of the car, i threw my truck in park, turned off the keys and looked at nathan, i was like, "i guess he's really going to come up here. ". >> reporter: in that moment, berry's friend started rolling her cell phone video camera. >> and when he walked up, i just looked at him, he said a couple words, threw a punch and it was on like donkey kong. >> reporter: on like donkey kong. turner goes down, and remember, his child is in the backseat. >> when i looked up, the first time i