On Thursday, 'My Week With Marilyn' will open in limited release around the country. The film tells the story of Marilyn Monroe (Michelle Williams), who, while filming 'The Prince and the Showgirl' in England, ended up running off for a week with third assistant director Colin Clark (Clark ended up writing a book about his experience, which became the basis for this film). Viewers also get to see the frustration of Sir Laurence Olivier (Kenneth Branagh), who directed and starred alongside Monroe in 'Prince.' Per the film her tardiness and inability to remember lines drove Olivier insane. Or did it? (Cue: thunderclap.) Actually, yeah, probably.