1: Speaks about actor Alan, a youth (5,4)
3: Do any letters appear after number 12? (7)
4: Tell about French and Scottish island (7)
5: An inhabitant of Eastern Europe makes love nearer the middle (7)
6: Apprentice relinquishes heart to temptress (7)
7: Boob implant cups: sad hoax in line with 15-down (8,3)
8: English novelist is in future a delight (5)
11: Risk of pole womans end being upset after handy beer (11)
15: Study a French instrument - it's a puzzle (9)
17: Remain distraught about initially rowdy sailor (7)
18: Strike true form with cloud nine (7)
19: Covert watchers gawk, at last captivated by temptresses (7)
20: Against that terrible, consuming war (7)
21: Remove a couple of statues before writing on some tombstones (5)
24: Take Chair in university (3)