Cryptic crossword No 2,886

Across

1. Quack quietly for something sticky and sweet (6)
2. Core elements of soil in South American river causing delusions (8)
3. Turn Musk more gloomy (8)
4. Died worse off but diviner (6)
5. Screened dour acting up in outhouse (8)
6. Components of psychiatric or nervous difficulty (6)
7. Navy's surprise broadcast for the British press (5,6)
8. Twins invested in dredge mining (6)
9. 19 getting worked up about scripture behind the scenes (2,6)
10. Criminal's constant about scheme (8)
11. Multiple persons embracing alternative idea (6)
12. At some point during autopsy, check reveals innermost self (6)
13. Rubbish politician finally working with awareness (8)

Down

1. Characters in American's werewolf comeback (6)
2. Arch enemies swapping east for west? One of them was Caspar (4,3)
3. Indulging in untested theories dangerously occupied sense (13)
4. Intermittently help wild mice to spread contagion (8)
5. Rose above former partner reportedly with high ranking (8)
6. Oedipal behaviour entices topless nuts (6)
7. They redact if they detect things in speech (7)
8. Utter fool gets on board showing common sense (6)
9. Style of reversible kimono is revolutionary (7)
10. Broken ankles treated with alternatives to toxic health care scam (5,3)
11. Brought to mind all the same things initially (7)
12. Perfect example of dowry being arranged with bride's capital (6)
13. Traditional cure pitched to one who makes false statements (8)