1: Tuck's in a bad way, unable to move. (5)
4: In secrecy, cleverly adapt to new function (7)
8: A cut back in brightly colored southern pastries (9)
10: Man, and French Impressionist (5)
11: Fully equipped to follow it around (2,5)
13: D*** petrol pump sample? (7)
14: Mum gets customers some guns (7)
15: Walesa still embodies how Nobel Laureates soar? (3)
16: Take a turn or a thousand dollars (3)
17: Agree to make Lucifer wicked? (3)
18: Raw material for Swedish coins (3)
20: Franklin eagerly grabs stock (7)
22: Smash top off strange fruit with speed (7)
23: A little party is often needed in the garden. (7)
24: Colder here in Paris emergency room (5)
25: Heard Italian city in canyon is from the stone age, perhaps (3-6)
27: Girl hangs around artists' quarter for something to get tanked with? (7)
28: Quietly pulls electrical connectors (5)