1. Glum (5) 3. Allow to enter (5) 6. At that time (4) 7. Tin alloy (6) 9. Russian liquor (5) 10. One of two equal parts (4) 11. Plaything (3) 13. Swift (4) 15. Shatter (5) 18. One of the 12 apostles (6) 19. Earth (4) 20. Abode of the dead (5) 21. Metallic compound (5)
Down
1. Incentive (6) 2. Beg (5) 3. Purple quartz (8) 4. Hotel for motorists (5) 5. Ripped (4) 8. Bed (8) 12. Entirely (6) 14. Assisted (5) 16. Coral island (5) 17. Deep wound (4)