Complex sentence: Hook, disgusted with Peter's adult self does not believe him to be Pan and wants to kill him and the children, but his henchman Smee deduces that spending so long away from Neverland had wiped all memory of it and who he was.
Split into simpler sentences: Hook, disgusted with Peter's adult self, does not believe him to be Pan and wants to kill him and the children. His henchman, Smee deduces that spending so long away from Neverland had wiped all memory of it and who he was.