This article/section contains information officially created to be part of the Lost mythos
but ultimately rejected. It may be endorsed by ABC, or feature cast members.
Before the crash
Chris and his brother Steve were returning from a two-week trip to Australia, suggested by Chris after Steve's wife died, when their plane crashed. After finding the journal previously kept by Janelle Granger, Chris suppressed the memory of his brother's death and began adding his own writing to the book. The tone of Chris's entries were often introspective and cynical, commenting on faith and human nature, and grew increasingly paranoid. When the character of Henry Gale was introduced in the show, Chris began referring to the "suspected 'Other'" being held captive in the hatch as his "brother." At the time, his name had not been disclosed, and fans began to speculate that he was one of the Others who had infiltrated the main group — a theory corroborated by the fact that he didn't know Janelle and by other statements:
In the final entries of the season, he revealed that his brother was actually Steve Dobson, another passenger of Oceanic 815 who died in the crash, crushed by a piece of ceiling that fell when the plane broke apart. Chris had persuaded Steve to make the trip to Australia and even traded seats with him on the plane — meaning he should have died in the crash. Perhaps because he felt responsible for his brother's death, Chris suppressed the memory until Jack, who helped with the burial, showed him the grave of his brother.