Across
- 1. Something strange to solve (7)
- 3. Person who might be guilty (7)
- 5. Secret agent(3)
- 7. Place where someone hides (7)
- 8. Unlawful act (5)
- 10. Device to secure a door (4)
- 11. Something that helps solve a case (4)
- 13. Someone who saw a crime (7)
- 17. Answer to a mystery (8)
- 18. Proof in an investigation (8)
- 20. Excuse to prove innocence (5)
Down
- 2. What is real (5)
- 4. Something kept hidden (6)
- 6. Game or challenge to solve (6)
- 9. Get away from a place (6)
- 12. Person who solves crimes (8)
- 14. Dark shape made by blocking light (6)
- 15. Talk to get information (8)
- 16. Mark left by a foot (9)
- 19. An investigation project (4)