Across
- 1. Triangle of vanished planes
- 6. Code in a book mystery
- 9. Elusive Himalayan creature
- 11. Mysterious field patterns
- 12. Disappearing lighthouse keepers
- 13. Enigmatic manuscript
- 14. Astronomical radio mystery
- 15. Money pit mystery
Down
- 2. Vanished Native American civilization
- 3. Monster's alleged home
- 4. Unexplained Norwegian phenomena
- 5. Unsolved treasure codes
- 7. Hikers' unexplained deaths
- 8. UFO sighting event
- 10. Cryptic street messages