Complete
00:00:00
8 10 13 16 6 5 19 1 17 2 9 14 3 11 15 4 12 18 7
  1. 5 a Thickening agent in cooking (9)
  2. 8 a Sterile (4)
  3. 9 a Delinquent (8)
  4. 10 a Playful (6)
  5. 11 a Gloomy (6)
  6. 13 a Twitchy (2,4)
  7. 15 a Purge (6)
  8. 16 a Lethargy — not in CIA (anag) (8)
  9. 18 a People (4)
  10. 19 a Haphazard (3,2,4)
  11. 1 d Flute or oboe, for instance (8)
  12. 2 d Seize — fragment (6)
  13. 3 d Habitually (6)
  14. 4 d Scottish island — mountains on the French-Swiss border (4)
  15. 6 d Conspicuous (9)
  16. 7 d Give up (9)
  17. 12 d Henry VIII's warship that sank in the Solent (8)
  18. 14 d Inventor with over 1,000 US patents to his name, d. 1931 (6)
  19. 15 d Canal or hat? (6)
  20. 17 d Copy without acknowledgement (4)

Across

Down