This crossword No. 10158 clues and answers were published on Sat 23 Nov 2002 and the puzzle can be visited by following The Guardian Quick Crossword No. 10158 link.
All Across Clues and Answers:
1-across – Brass tacks : NITTYGRITTY
9-across – Highest : UPPERMOST
10-across – Gender : SEX
11-across – Hacking affliction : COUGH
13-across – Gin and vermouth : MARTINI
14-across – Cruel person : SADIST
15-across – Comedian’s butt : STOOGE
18-across – Rock-dwelling siren : LORELEI
20-across – Luxor’s country : EGYPT
21-across – Organ of vision : EYE
22-across – Clerical neckwear : DOGCOLLAR
24-across – Building brick : BREEZEBLOCK
All Down Clues and Answers:
2-down – Naughty demon : IMP
3-down – Sets on fire : TORCHES
4-down – Dismal : GLOOMY
5-down – Entomb : INTER
6-down – Evidence offered by a witness : TESTIMONY
7-down – Mercury : QUICKSILVER
8-down – Not in the phone book : EXDIRECTORY
12-down – Smalls : UNDERWEAR
16-down – Plant with leaves in three parts, eg clover : TREFOIL
17-down – Advertising tune : JINGLE
19-down – Soup spoon : LADLE
23-down – Insect’s resinous secretion : LAC
This crossword has in total 24 where 12 are across and 12 are down.