- HD 1080
- Runtime: 99m.
- Status: Released
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- Languages: en
- Country: United States of America
- Director: Alfred L. Werker
- Stars: Beatrice Pearson, Mel Ferrer, Susan Douglas, Robert A. Dunn, Richard Hylton
- keywords: nurse, clinic, passing for white
- Production_studio: RD-DR Productions, Louis de Rochemont Associates
- Slogan: The True Story Of A Family Who Lived A Lie For Twenty Years!
- The Lost Boundaries is featured in the top rankings of 1949
- #66 in Top Drama Movies of 1949
A light-skinned African-American family are "passing" in an all-white New England town. When the truth comes out, the more prejudiced neighbors demand their expulsion from the community.