Cryptic crossword

ACROSS

1. Trace it out to mark where something was omitted (5)

4. One is emphatically to feel son has to adapt (7)

8. Disturbs the peacekeepers as one pays one’s account (9)

9. Whatever the amount, a number lost their head for it (3)

10. Has an appetite for the gun, hers being made available (7)

12. Chapter head and epilogue first get confused (4)

14. Change of house more awkward, Valentine concludes (7)

17. Lose savour for everything after picnic begins (4)

18. Flat feature of ale − put a different brew out (7)

20. Very cold, one degree Celsius at beginning of the year (3)

21. Steep drop in price negotiated quietly with diamonds (9)

23. Get a dry version of it whirled around (7)

24. They float a flying service on a backstreet (5)

DOWN

1. Surprised to be dismissed, being off (6,7)

2. Begrudge a gift if it has no top to it (6)

3. With teeth chattering, looks embarrassed to be tied up (8)

4. Openings of industrial liaison should smooth its passage (3)

5. It is not difficult for the East to say it is wrong (4)

6. Puffed up by success, was misled about tea-break (6)

7. In-flight teacups served on them to unknown spacecraft (6,7)

11. Ship shows up the gambling on soccer results (5)

13. King’s man was one with a supercilious attitude (8)

15. One at sport left for the right in petition (6)

16. It might be life of difficulty for what one holds is true (6)

19. Such cash as one may catch sight of (4)

22. Object one aims at in sudden dispute (3)