1: Missed hoax set up to trap Sunday drunk outside saloon entrance (4,5,2)
6: Perform part of play (3)
8: Animated lass in set is Snow White (9)
10: Without it, set call for recompense (3)
11: Icy turning, for example, on top (5)
12: Like Nadia or Olga, my acting's affected (9)
13: Dizzy Ben is a playwright (5)
15: Shock with exclamations while mounting horse (9)
17: Merry-go-round made from a vehicle with wake-up lamps in front (9)
18: Principle unaffected by revolution (5)
19: Extravagant, but terribly organised (9)
21: Ordered hoop to conserve mass and energy (5)
25: Tick off and send back into custody to conceal rip-off (9)
27: Ball tops over-ripe bananas (3)
28: Barque, for one, is a trio-tutor (5-6)