Across
- 6. Pawnbroker with blazing red hair
- 7. Encyclopedia copied by Jabez Wilson.
- 9. Died of "heart failure"
- 10. Head of the Paris Police
- 12. Creator of Father Brown
Down
- 1. What Madame Deroulard did to her son
- 2. Asks Poirot to investigate Deroulard's death
- 3. Doctor John; colleague of Sherlock
- 4. World's most famous criminal, according to Chesterton
- 5. Assistant to Jabez Wilson with an interest in photography
- 8. Has a prescription for trintrin.
- 11. Notorious criminal and fourth smartest man in London.