Wee Lady Betty rules the O'Reilly castle with a stern hand and a big heart until she learns that Roger, the O'Reilly heir, is coming to take possession of his estate. Unable to provide for her aged father, Betty conceives of a scheme. Feigning to leave the castle, she returns after dark with her father and installs him in the haunted chamber.
| Actor | Role |
|---|---|
 Bessie LoveWee Lady Betty | Wee Lady Betty |
 Frank BorzageRoger O'Reilly | Roger O'Reilly |
 Charles K. FrenchFergus McClusky | Fergus McClusky |
 Walt WhitmanThe O'Reilly | The O'Reilly |
 Aggie HerringMrs. O'Reilly | Mrs. O'Reilly |
 Walter PerkinsShamus McTeague | Shamus McTeague |
| TThornton EdwardsConnor O'Donovan | Connor O'Donovan |
| LL. JeffriesLanty O'Dea | Lanty O'Dea |
 Alfred HollingsworthFather Dan | Father Dan |
 J.P. LockneyMichael O'Brien | Michael O'Brien |