Beth Saunders and Daniella Di Paolo are working on a psychological thriller film titled "Rockabye Baby". The film is set in rural England in the Victorian era and follows a mother named Helen Cunningham who is tormented by her imagination of "The Widower" and falls into a dangerous mental state. They plan to introduce the characters of Helen and The Widower, provide an overview of the opening sequence using various camera shots and movement, scout locations, and cast actresses like Michelle Dockery and Helena Bonham Carter for the roles. Potential challenges include location and actor availability which they plan to overcome with understudies and advance planning.