The Secret Life of Marilyn Monroe tells the untold story of the world’s most famous sex symbol and uncovers many closely-guarded secrets. The outside world never truly sees the real Marilyn, a woman so different from her public persona. While she reveled in her stardom, she never could control her inner demons and the onslaught of mental illness she inherited from her mother Gladys (Academy Award® winner Susan Sarandon) – a woman she loves, hates and desperately wants to save. Although her movie studio told the world that Marilyn’s mother was dead, it is the great secret of Marilyn’s life that Gladys remained a vital and troubling part of her life. Still, as Marilyn soldiers on, she gives the performance of her life, successfully hiding her darkest secrets from the world.