48 Hours: Post Mortem

48 Hours Correspondent Anne-Marie Green and Producer Josh Yager discuss the death of Davis McClendon, who was fatally struck by Bud Ackerman, the estranged husband of Davis' love interest. They dig into the defense's argument that the collision was an accident, the trove of digital evidence from Bud's truck, and why the Ackerman's babysitter was the first one on the scene to call 9-1-1.