Set at the beginning of the Civil War, Tap Roots is all about a county in Mississippi which chooses to secede from the state rather than enter the conflict. The county is protected from the Confederacy by an abolitionist (Ward Bond) and a Native American gentleman (Boris Karloff). The abolitionist's daughter (Susan Hayward) is courted by a powerful newspaper publisher (Van Heflin) when her fiance (Whitfield Connor), a confederate officer, elopes with the girl's sister (Julie London). The daughter at first resists the publisher's attentions, but turns to him for aid when her ex-fiance plans to capture the seceding county on behalf of the South.
| Editing | Milton Carruth | Editor |
| Production | Walter Wanger | Producer |
| Art | Ruby R. Levitt | Set Decoration |
| Art | Alexander Golitzen | Production Design |
| Art | Russell A. Gausman | Set Decoration |
| Costume & Make-Up | Bud Westmore | Makeup Artist |
| Camera | Lionel Lindon | Director of Photography |
| Directing | George Marshall | Director |
| Camera | Winton C. Hoch | Director of Photography |
| Sound | Frank Skinner | Original Music Composer |
| Writing | Alan Le May | Screenplay |
| Writing | James H. Street | Novel |
| Crew | Lionel Wiggam | Additional Dialogue |
| Costume & Make-Up | Yvonne Wood | Costume Design |
| Art | Frank A. Richards | Art Direction |
