S2, E4: A 12-year-old's joyride comes to a screeching halt at a police roadblock and sets off a murder investigation when a body is found in the trunk of the car she was driving. The mechanic for NASCAR driver Trey Lancer, Cole Hunter, had been beaten to death. In his search for the truth, Jim Longworth goes head to head with top drivers and owners. Meanwhile, Callie reconsiders entering the Witness Protection Program after Ray is brutally attacked in front of Jeff. David Danello, Cameron Protzman and Taylor Handley guest star. NASCAR drivers Carl Edwards, Joey Logano, Tony Stewart and Brian Vickers all appear as themselves in this episode.