Old Silas Blackburn, a wealthy recluse, lives alone with his butler and his ward Katherine. One night, Katherine discovers Silas murdered in the room where three generations of Blackburns have mysteriously died. Silas' grandson Robert, whom Katherine loves, comes to visit the next day, suffering from amnesia.
| Actor | Role |
|---|---|
 Olive TellKatherine | Katherine |
 James MorrisonRobert Blackburn | Robert Blackburn |
 Ivo DawsonCarlos Paredes | Carlos Paredes |
 Charles MackayDr. Groome | Dr. Groome |
 Floyd BuckleyHowells | Howells |
| MMario MajeroniSilas Blackburn | Silas Blackburn |
| GGordon HamiltonRobinson | Robinson |
| PPeggy ParrMario | Mario |
| GGeorge StevensJenkins | Jenkins |