 Locke begins to suffer physical difficulties as he and Boone try to find a way into the hatch, leading them to discover a cashed Cessna airplane in the woods containing long-dead drug smugglers. More of Locke s background story is revealed how, 10 years earlier, he met a mysterious woman claiming to be his biological mother. Meanwhile, Jack is reluctant to offer assistance when Sawyer begins to experience excruciating headaches.