Cryptic crossword No 4,127

Across

1. Badly-behaved elf’s almost completely missing insecurity (10)
2. Joe, wanting buzz, resisted relapsing (5)
3. It rains on foggy island (9)
4. Caught evasive fish (3)
5. Tweeting youth not quite with it (4)
6. Epic line in the second commercial (5)
7. Retrospective put on about artist lacking range (6)
8. Engine stops working - early signs from engine light (6)
9. Authorities start to persecute those in debt (6)
10. Perhaps you expected results with hospital department? (6)
11. Supreme lover's main man is beheaded (4)
12. Fan of a story disheartened by song and dance (10)
13. Diver’s ire provoked by edge of water (9)
14. Aim to return without a note (3)
15. Treatment covering onset of virus displayed exponential growth (5)

Down

1. Studies finale to guardian cryptic (10)
2. Lay waste to resting place (4)
3. Went to make small change with new direction (4)
4. Not closing unused box (4)
5. Partially in a dire low (5)
6. Finally sea monster mounts dolphin (4)
7. Out of touch far from shore, pens two notes (2,2-2,4)
8. Garbage used to be emptied there (5)
9. Dunes rolling over edges of crack in platform (3,4)
10. One overindulging in baked beans brought to campsite, possibly? (4,7)
11. What’s behind training two sheep back-to-back? Communicating rules (7)
12. Workers essentially brought aboard to mark up shelves (5)
13. Who says I am restricted by child? (5)
14. Muslim welcome in South America (4)
15. Primarily inactive, do little on vacation? (4)