 He resurfaces several episodes later in "The End of All Things", during Peter and Walter's search for the kidnapped Olivia, where he appears in Walter's lab, and is dying from the gunshot wound.In an attempt to discover the location of Olivia, Peter enters September's mind using the same method Olivia used to enter John's in the pilot.September has no information on Olivia, but does tell Peter that the Observers come from the future to observe their beginnings, and explains that he has interfered in the past.