Previous cryptic solution

Across: 1. Depth 4. Cat’s-paw 8. Contamination 10. Elite

11. Only 12. Film 16. Piece 17. Interwreathed 19. Narrate

20. Tiger

Down: 1. Decomposition 2. Pin 3. Heaven 4. Critic

5. Travel 6. Primitive 7. Wing-commander 9. Alligator

13. Sparta 14. Decree 15. Depart 18. Hug