1: Religious types taking some time in the morning? (5)
4: Endless greeting after wine and cheese (4-5)
8: Come round again about dog (5)
9: Finally nuts, Im crazy for cow (9)
11: Rusty hinge makes animal cry (5)
12: Flower festival is pointless (5)
13: In the manner of a girl (3)
14: I'm great novel detective (7)
15: California owl sounds like being in a partnership of sorts? (7)
16: Betraying no emotion when Greek god has first expired (7)
18: Underworld boss can be found among crazy sun-worshippers (7)
21: Frost to cover the cake (3)
22: Coal remaining at the end of a month (5)
23: Tied down holding back fighting (5)
24: Lignite with low carbon content (5,4)
26: City train bears the woman's name (5)
27: Sounds like I hit it into orbit (3,6)
28: Hangs ten vassals at hearing (5)