Wissenswertes

Chapter Titles: 1. Deadly Prophecy 2. The Stolen Formula 3. Hidden Death 4. Peril in the Sky 5. The Spider's Lair 6. Glass Guillotine 7. Wheels of Death 8. False Information 9. The Spider's Venom 10. The Stolen Corpse 11. Death Dials a Number 12. The Talking Mirror 13. A Life for a Life

The budget (expected cost) for this film was $168,995. The actual negative cost was $186,314. This film was nearly $20,000 over the expected cost budget.

Republic Pictures production number 1697.

In Chapter 7 a poster for Republic's serial Jesse James reitet wieder (1947) is shown.

In Chapter 9 Rube Goldberg is mentioned.