After Kenneth DiLaurentis confesses that Charles was Jason's older brother who was sent to Radley Sanitarium as a child, the girls realize they must find proof of his history—or his death—before it is erased. Key "pieces" of the mystery in this episode include:
: Kenneth claims Charles committed suicide at age 16 by overdosing on pills and was cremated, but the Liars search for a grave or actual proof to confirm he isn't still alive and acting as "A". [S6E4] Don't Look Now
In the Pretty Little Liars episode (Season 6, Episode 4), the "pieces" refer to the missing evidence of Charles DiLaurentis' past . After Kenneth DiLaurentis confesses that Charles was Jason's
: Spencer experiences "pieces" of her own past through dark flashbacks of the dollhouse, where she remembers being covered in blood. : Spencer experiences "pieces" of her own past