Pulp hero "The Spider" seeks to destroy all criminals. In this serialized adventure, he battles The Octopus, who intends to replace the government of the United States.
| Actor | Role |
|---|---|
 Warren HullThe Spider / Richard Wentworth / Blinky McQuade | The Spider / Richard Wentworth / Blinky McQuade |
 Iris MeredithNita Van Sloan | Nita Van Sloan |
 Richard FiskeJackson | Jackson |
 Kenne DuncanRam Singh | Ram Singh |
 Forbes MurrayPolice Commissioner Stanley Kirk | Police Commissioner Stanley Kirk |
 Marc LawrenceSteve Harmon | Steve Harmon |
 Charles Cahill WilsonChase | Chase |
| EEugene Anderson JrJohnnie Sands | Johnnie Sands |
 Ann DoranMason's Secretary | Mason's Secretary |
 Paul WhitneyGray | Gray |
| BBeatrice CurtisKate Sands | Kate Sands |
| GGordon HartJ. Mason | J. Mason |
 Byron FoulgerAllen Roberts | Allen Roberts |
 Donald DouglasJenkins | Jenkins |
 John TyrrellHenchman Grafton | Henchman Grafton |
| HHenry TaylorWilson (uncredited) | Wilson (uncredited) |
 Lee ShumwayPolice Sergeant (uncredited) | Police Sergeant (uncredited) |
| HHarry CornellBrownie (uncredited) | Brownie (uncredited) |