1: Smile about Crazy Mel, a supposed source of trouble (7)
2: Tidy up and clean floor finally and decisively (4,3,3,3)
3: Tinkers jump in children's world (3,4)
5: Ask for bit of bread with melted cheese (7)
6: Leave northbound dude in car (4,3)
7: Tender translator of runes (5)
9: I turn, lost, in Italian city (5)
11: Cook ran; ragout spilled; one might jump to conclusions here? (8,5)
17: Hate how kids lie badly (7)
18: It's news broadcast for a seer (7)
19: Go over and bring harness-racing horse back (5)
20: Carrie's telekinesis is more frightening (7)
22: Horse fly's, um, retreating (7)
23: Regretted backing up grasping tip of massive object (5)