A silent action movie serial consisting of 15 chapters.
| Actor | Role |
|---|---|
 Ben F. WilsonJohn Shirley | John Shirley |
 Neva GerberPolly Marion | Polly Marion |
 Francis McDonald'Red' Warren | 'Red' Warren |
 Joseph W. GirardDr. Reynolds | Dr. Reynolds |
 Nigel De BrulierProfessor Duval | Professor Duval |
 Howard CramptonCaptain Cronin | Captain Cronin |
 William QuinnEmil LaRoux | Emil LaRoux |
 Irene HuntMrs. Reynolds | Mrs. Reynolds |
 Ernest ShieldsHoward Van Cleft | Howard Van Cleft |
 Hoot GibsonNot listed | Not listed |
 Josephine HillNot listed | Not listed |
 Evelyn SelbiePale Ida | Pale Ida |
| LL.M. WellsProfessor Montague | Professor Montague |
| WWilliam CanfieldWilliam Grimsby | William Grimsby |
| FFrank MacQuarrieAlvin Van Cleft | Alvin Van Cleft |
| FFrank TokunagaNot listed | Not listed |
| LLew ShortShort | Short |
| WWillard WayneWayne | Wayne |
| CCharles DorianDorian | Dorian |
| WWadsworth HarrisJames Walsh | James Walsh |