 After the death of Boone, tempers flare as the castaways  suspicions of each other grow, while an unlikely survivor (Shannon) vows revenge against Locke, unfairly blaming him for Boone s death leading her to steal the keys to the late marshal s briefcase containing the guns. Meanwhile, Claire and Charlie struggle to calm her newborn baby boy. Sayid meets with Locke in the jungle and learns of the existence of the mysterious hatch, leading to more of Sayid s background story about why he came to Australia and was blackmailed by the CIA to nab an old friend whom was a terrorist suspect.