This is the story of Irish theatre legend, Katherine O'Dell, as written by her daughter Norah. It tells of early stardom in Hollywood, of highs and lows on the stages of Dublin and London's West End. Katherine's life is a grand performance, with young Norah watching from the wings. But this romance between mother and daughter cannot survive Katherine's past, or the world's damage. As Norah uncovers her mother's secrets, she acquires a few of her own. Then, fame turns to infamy when Katherine decides to commit a bizarre crime. Actress is about a daughter's search for the truth: the dark secret in the bright star, and what drove Katherine finally mad.