SOLUTION TO PRIZE CROSSWORD No 15,991:

ACROSS: 1 Sacrificial. 9 Lacteal. 10 Eatable. 11 Ass. 12 Synergy. 13 Hang-ups. 14 Tea. 15 Ochre. 17 Exist. 18 Crypt. 20 Inset. 22 Tod. 24 Proviso. 25 Strange. 26 Lit. 27 Toenail. 28 Imagism. 29 Nursing home. DOWN: 1 Secondary modern. 2 Cheerio. 3 Inlay. 4 Ice sheets. 5 Intense. 6 Labour-intensive. 7 Closet. 8 Jet set. 16 Hoi polloi. 18 Capote. 19 Thin air. 21 Tornado. 23 Dreamy. 25 Sting.