How the Maysles Brothers' cult classic 1975 documentary "Grey Gardens," about mother and daughter "Big Edie" and "Little Edie" Beale (the aunt and cousin of Jackie Onassis) living in a dilapidated Hamptons mansion, was turned into a Broadway musical. Included: interviews with Albert Maysles, composer Scott Frankel, lyricist Michael Korie, dramatist Doug Wright and the play's cast, plus Beale devotees.