Across
- 2. Sudden insight
- 6. Mark left behind
- 7. Helpful clue
- 8. Person who witnesses an event
- 11. Trail follower
- 12. Police workplace
- 14. Important clue
- 15. Hidden information
- 18. Careful examination
- 19. Crime solver
- 20. Search for facts
Down
- 1. Person being questioned
- 3. Person who commits a crime
- 4. Person who solves puzzles
- 5. Written case notes
- 9. Follows people secretly
- 10. Final solution
- 13. Mystery to be solved
- 16. Person who investigates
- 17. Secret watcher