At first, he's unimpressed with the woman he refers to as MM. "She looked absolutely frightful," he says of her first appearance on the film set. "Nasty complexion, a lot of facial hair, shapeless figure and, when the glasses come off, a very vague look in her eye." Yet by the very next day she's worked her magic and he's describing her as looking "like an angel". Soon, he's finding excuses for her behaviour: her chronic lateness, her reliance on her acting coach, her need for booze and pills.
Observant and smart, Clark is in pole position to record the few ups and many downs of filming. His insights are honest and interesting and he watches Marilyn especially closely, observing the contradictions in her character as well as her wonderful figure.
The second diary fills in the blanks Clark left in the first. It covers the nine days when Marilyn, whose new marriage to playwright Arthur Miller is already shaky, draws him close to her. First, they share a chicken salad and confidences; then a day trip, a swim and a kiss on the lips; finally, a night in bed.
Clark - who died in 2002 - is adamant "nothing improper" happened between them. I'm not convinced and neither does his account of their private conversations always ring true to me. Nevertheless, I found both diaries intriguing and entertaining, and I'll be queuing for my ticket for the movie version when it is released in New Zealand in March.