The murder of an ambitious politician's researcher leads journalist Cal McCaffrey to uncover a complex thriller revealing the links between government and big business.

After their plane crashes on an isolated tropical island, the survivors discover others who are descendents of a secret medical testing group called the Dharma Initiative. As the power of the island to both heal and destroy comes into sharp focus, the lines between good and evil are blurred and loyalties are challenged when the survivors of the crash become tangled within the lives of the Others.

Lieutenant Commander Harm Rabb, Jr. is back to prosecute all crimes, accidents, and espionage related to the Navy and Marine Corps. He and his partner, Major Sarah "Mac" MacKenzie, use their wits to solve the mysteries behind the cases. In this season, Harm considers leaving Mac behind when his dream of becoming a pilot is realized, just as Admiral Chegwidden welcomes a new attorney to the JAG team. But it's Bud and Harriet with the biggest news of...