Murder Mystery

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Across
  1. 3. Legal Science (3)
  2. 7. Train Robber that ended up in Brazil (6/5)
  3. 10. Bitter plant (8)
  4. 11. Lifting tool (4)
  5. 12. Mafia employee (3/3)
  6. 14. Gangster family (4)
  7. 17. Agent (3)
  8. 21. Police (3/4)
  9. 22. 221B... (5/6)
  10. 26. Famous luxury train (6/7)
  11. 27. Spy novelist who wrote "Chitty Chitty Bang Bang" (3/7)
  12. 28. Title of Holmes' assistant (2)
  13. 29. Cease (3)
  14. 30. Lariat's loop (5)
Down
  1. 1. Prof. Plum's game (6)
  2. 2. Magazine container (3)
  3. 4. Beaker (3)
  4. 5. East London District (11)
  5. 6. Sleuth whose name is French for "seller of pears" (6)
  6. 8. Traitor's blow (4)
  7. 9. Printing Font (11)
  8. 13. Miss of Mystery (6)
  9. 15. Rightness (7)
  10. 16. London area, centre of the UK diamond trade (6,6)
  11. 18. Very long sentence
  12. 19. Criminal Science (9)
  13. 20. Robbery (5)
  14. 23. A cutting tool (5)
  15. 24. 1948 Alfred Hitchcock film (4)
  16. 25. Evidence collectors (3)