Six degrees of separation is the idea that all people are six or fewer connections away from each other. In The Guardian, Larry Ryan traces the links across time between Marilyn and her third husband, playwright Arthur Miller, and four artists working today – Blonde director director Andrew Dominik, musicians Nick Cave (who composed the film’s score) and his former love PJ Harvey, and ‘hipster provocateur’ Vincent Gallo – who starred in Angela, the directorial debut of Arthur’s daughter, Rebecca Miller.