Referring to the picture as Mary Cary, the title of the 1910 Kate Langley Bosher novel upon which the film was based, the 10 April 1920 Camera announced that production was currently underway at the Brunton Studios in Hollywood, CA. One year later, the 16 April 1921 Motion Picture News announced that Nobody's Kid, a “Mae Marsh vehicle,” was ready for release earlier than expected. It marked the second film Marsh made for Robertson-Cole Pictures after a two-year hiatus. The news item described the source novel, which was published in Harper’s, as “as serio-comic story of the life of a little group of orphans who were led through a remarkable series of trials and tribulations by a defiant, warm-hearted little girls, who found happiness after many adventures.” The 30 April 1921 Motion Picture News added that that Bosher had endorsed the film adaptation of her story. Robertson-Cole officials stated that the movie upheld a “close adherence to the story in book form” in order to please its “tens-of-thousands” of readers. The 30 April 1921 Exhibitors Herald review, which noted that the novel was regarded as a best-seller and had been published in several editions by the time of the film’s release, gave the following synopsis:
       ”Mary Cary, since babyhood, has lived in the orphanage. Under the severe eye of Miss Bray she and her little playmates get little enjoyment out of life. She is punished for slight infractions of the rules and severely reprimanded when her diary is found to contain pictures and writings of her teacher. She overhears a conversation regarding an uncle; she writes to him and there is the usual happy ending, with the uncle falling in love and marrying the pretty nurse of the school.”
       According to the Library of Congress American Silent Feature Film Survival Database, this film is extant.