During Marilyn Monroe's (Michelle Williams) First Trip to London to Film the Prince and the Showgirl with Sir Laurence Olivier (Kenneth Branagh), She Befriends Colin Clark (Eddie Redmayne), An Ambitious 23-Year-Old Third Assistant Director on the Set. As Their Relationship Progresses, Colin's Focus Shifts from Making His Way in the Film Business to Rescuing Her from the Pressures of Celebrity Life. When Monroe's New Husband, Playwright Arthur Miller, Makes a Brief Trip to Paris, Clark Takes the Opportunity to Introduce Her to the World Outside of Hollywood Fame. Based on the True Story By Colin Clark, This Memoir Describes a Magical Week in Which Monroe Opens Herself Up to a Stranger and Finds in Him a Confidant and An Ally.