Contains spoilers for this episode and earlier episodes.
Kate sees a black horse in the jungle and becomes increasingly unsettled while caring for Sawyer. Delirious, Sawyer grabs her and speaks as though she killed him. Kate flees the hatch, leaving the countdown unattended. Jack confronts her, but their argument ends with Kate kissing him and then running away again. Sayid tries to speak at Shannon's funeral but can only say that he loved her. Later, he finds Kate at the grave and tells her that he also saw Walt before the shooting. Kate returns to Sawyer and speaks aloud about Wayne, the man whose presence she fears she is hearing through him.
Flashbacks reveal that Kate blew up Wayne's house with him inside, after discovering that he was her biological father. Her mother reports her to the marshal. Kate escapes after a black horse causes their car to crash, then visits Sam Austen and discusses discovering that Wayne was her biological father. On the island, Sawyer recovers and also sees the horse when Kate takes him outside. Eko gives Locke a missing section of the orientation film hidden in the Arrow station's Bible. They splice it into the reel and hear a warning against using the computer to communicate. Meanwhile, Michael receives a message, types his name and waits. The reply addresses him as Dad, leaving the sender's identity unconfirmed.