1 Revise text starting at the end, identify high point (8)

 5 SS victory dividing French priests (6)

 9 Shocking, true version of Maria cut (9)

11 Sixty Minutes introduces one beautiful girl (5)

12 and 16 Actor’s tree-lined avenue Down Under (6,11)

13 Furry mammal returns after a group of doctors drink (8)

15, 23 and 19 Unbridled envy we erase with a night of revelry (3,5,3)

16 See 12

18 Revolting creeps postpone fair (11)

19 See 15

20 We use the Roman variety in 25 or XXV (8)

22 Energetic person’s stimulating Monday (6)

25 Three perfect squares are polite (5)

26 Misplaced equal sign is telling (9)

27 Outspoken knight nails extra duty (6)

28 Gym clothes screen organization or composure (8)

 1 Unsound artistic interpretation in play by Shakespeare (5,10)

 2 Sketch plumage and head of swan with reductions (9)

 3 She may have said, “I like Ike” or, surprisingly, “I am me” (5)

 4 Dang! Headliner retreats (4)

 6 She used to escort you among texters, by the trees, in a storm (9)

 7 Leap over part of a bank (5)

 8 Mistake that could make a shoe uncomfortable? (4,2,3,6)

10 Visiting Dot’s frequent companion in Great Britain at the end of July (6,2)

14 Agent covers the floor with snakes or lizards (8)

16 Primate discussed one type of theater (9)

17 Euphoria about even just the first half of a promotion (9)

21 Shaker’s associate: leader in music again (5)

23 See 15

24 “It’s cold outside!”—university vice president (4)
 

ACROSS 1 & 12 THE + BEAT + LES 1 & 19 anag. 3 HOPPING + JOHN
9 P + LATITUDE 10 BUY(E)R (ruby anag.) 11 anag. 14 “cowered” 17 RABBI + T 22 G(E)ORGES + POMP + I DO
+ U 25 init. letters 26 HEART + H(R)UG 27 ERIN(GOB + RAG)H (Rhine anag.) 28 O + NO (&lit.)

 
DOWN 1 hidden 2 EX + AMPLE 3 “high coup” 4 PLUMM(I)ER 5 “I sin”
6 G(ABLER)OOF 7 OX + YMORA (moray anag.) 8 N + ORMANDY
13 TWIN + GEING (in egg anag.)
15 DRAG + RACE 16 hidden
18 BRON + CHI (born anag.)
20 opposites 21 Spoonerism of “hung, go” 23 S(AHI)B 24 2 defs.