1: Chip is describing rare bird call (5)
2: Give back wares to retailer's layaway? (7)
3: Nanny, for example, entertained by young pig (3-4)
4: Hazardous emanation from river used by a crime boss (5)
5: They make pies in Pier 1 while catching some Z's (9)
7: Warned of related crackpot (7)
8: Succumbed to one in evil castle (4,3,2)
12: Ensemble torches tram's interior (9)
13: Episcopal mixed drink (9)
16: Moving round to booming (7)
18: Pauses awkwardly after error but steadies nerves (5,2)
19: Briefly viewed bigot's heart, opened like a boil (7)
21: Old Testament figure appears before New Testament incident (5)
22: Believer with no head for bank job (5)
23: Sprinkles studs under reconstruction (5)