Quick crossword No 387

Across

1. Patrick, for example, accompanies sailor for attempt (4)
2. Castor and Pollux are alphabet's flagship model? (6)
3. Brutus would have hated this Mexican hors d'oeuvre? (6)
4. Rock lover's old car following water in high definition (10)
5. Draw one falling from winter sport, to carve? (6)
6. Iraqi sisterhood hides terrorist organisation (4)
7. Seconds after release is leisure (4,4)
8. Borderless tableau embracing eastern wine-dark sea (6)
9. English nobleman is odourless gas (6)
10. Large vehicles for country pile add to anxieties, earl is absent (6,4)
11. Casual whip, Bob perhaps? (5,3)
12. ER, for example, though endless, flows backwards from heart of river on borrowed time? (6)

Down

1. Turn companions back before southern stages (5)
2. Soon-to-be scout long kicked out of club (3)
3. Devilish, I sham Christian people (5)
4. Put down floundering sea bass having abandoned steamship (5)
5. Went past their prime (3-4)
6. Sharp lower jaw, American porcelain (4,5)
7. First-rate cocaine and upper-class soldiers make for discernment (6)
8. Showman's skill taken softly off piste (7)
9. Bypassing Territorial Army, beseech with ecstasy to start? (6)
10. Headless Achilles' weakness is slippery customer! (3)
11. Convenient, if you have an overactive bladder? (5,4)
12. Dispatched, according to reports, Penhaligon's perhaps? (5)