Previous solution

Across: 1. Hecuba 4. Scissors 9. Teacup 10. Incubate 12. Reimburse 13. Round 14. Custard-apple 18. Spelling-book 21. Error 22. Collision 24. Emphatic 25. Native 26. Repining 27. Behead.

Down: 1. Hat trick 2. Clarissa 3. Blurb 5. Contemptible 6. Square-leg

7. Opaque 8. Speedy 11. Predilection 15. Appertain 16. Positive 17. Skinhead 19. Veneer 20. Crop up 23. Image.