Across 1. Mop 3. Caster sugar 8. Rueful 9. Leniency 10. Issue 11. Thump 13. Moses 15. Shekels 16. Sidecar 20. Needy 21. Reaps 23. Chunk 24. Graduate 25. Indeed 26. The Third Man 27. Say
Down 1. Morning star 2. Pleasure 3. Cause 4. Tallest 5. Saint Patrick’s Day parade 6. Genius 7. Roy 13. Melon 14. Spicy 17. Capulets 18. Weekend 22. South 23. Conan 24. Got