Plot summary
Jack marries his former patient Sarah Wagner, and Christian gives him advice on writing his vows before the ceremony. In the present, Sayid takes Shannon on a date while Jack sends Kate to get medical supplies from Sawyer. On the way back, she discovers Claire going into labor. Jack instructs Charlie and Kate on how to deliver the baby. Unable to find matching blood donors for Boone, he gives him his O-negative blood but realizes it is seeping out of Boone's destroyed leg. Before he can amputate it, Boone asks him to let him die after revealing the hatch's existence and contradicting the story Locke told about his injury. Claire gives birth to a boy and Jack informs a returning Shannon of Boone's death, then goes to find Locke.
Credits
Adapted from Wikipedia contributors, Lost season 1. HTML formatting and reference markers removed.