Are you an amateur sleuth?

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Across
  1. 2. What did Columbo like to smoke?
  2. 3. Female amateur sleuth in her teens.
  3. 4. Who plays Rosemary Boxer in ITV's "Rosemary & Thyme"?
  4. 7. Kojak was known for which piece of Candy?
  5. 9. What is the nationality of Hercule Poirot?
  6. 10. Relative who came to live with the Hardy Boys, highly noted for her cooking.
  7. 11. Jessica Fletcher was the sleuth in this TV Series?
Down
  1. 1. Dangermouse's "quaking" villain?
  2. 4. Untidy detective, portrayed by David Jason in an ITV1 series?
  3. 5. Who wrote "And then there were none"?
  4. 6. Which Sleuth did Mickey Spillane create in "I the Jury"?
  5. 8. Which Private Eye first appeared in "The Big Sleep"?
  6. 12. What is the name of Sherlock's side-kick?
  7. 13. Humphrey Bogart played this famous sleuth.