1: Drunk aide with fifth of Cointreau observed returning prisoners (9)
5: They secure money for the government, so we hear (5)
8: He darts around drunk (7)
10: Hun paid out for French prince (7)
11: Lined salt shaker made ready for use (9)
14: Inflexible yet adjusted (3)
15: Water plants used in informal Gaelic gardens (5)
16: The joint action of substances is messy; ring doctor! (9)
18: Uncommon fly on rare plant (5,4)
19: Dizzy Ben is a playwright (5)
20: Picture a dessert without topping (3)
22: Simple addition in cult film (4,5)
23: Broken home rid of beneficiarys condition (7)
25: Explains how to get rid of rear ends! (7)
27: Idler, upset, stirred (5)
28: Dry debate about stuffed animal (5,4)