Travelers heading west in a wagon train, under repeated assault by Indians, discover someone in their group is supplying rifles to their attackers.
| Actor | Role |
|---|---|
 Rod CameronJeff Curtis | Jeff Curtis |
 Noah Beery Jr.Arch Lawrence | Arch Lawrence |
 Peggie CastleAnn Wilkins | Ann Wilkins |
 Michael ChapinBen Wilkins | Ben Wilkins |
 Henry BrandonClay Cook | Clay Cook |
 Sara HadenMrs. Cook | Mrs. Cook |
 Frank FergusonCyrus Cook | Cyrus Cook |
 I. Stanford JolleySlocum | Slocum |
 Almira SessionsAda | Ada |
 Anne KimbellAlice Lawrence | Alice Lawrence |
 Wheaton ChambersSam Wilkins | Sam Wilkins |
 Riley HillGaylord Cook | Gaylord Cook |
| EEffie LairdEmma, Old Maid | Emma, Old Maid |
 Harry TylerOld Man | Old Man |
 Glenn StrangeMarshal Jim | Marshal Jim |