ACROSS

 1 Is the musician who has it completely in the dark? (8, 6)

10 Slice is as you will, it still brings out something. (7)

11 Mr. Turk. (7)

12 I've a car, and a passion for riches. (7)

13 Philadelphia emmet? (7)

14 Not outings where they might hold a race for the 13. (7)

15 Box with brown finish. (7)

16 Be equal, and get even. (7)

20 Not one of Hmmett's "Stout Fellows." (4, 3)

23 How a careless grammarian might make a verbal mistake ? (7)

24 Error one might make on flight? (7)

25 Smart since it's become a metropolis. (7)

26 Cause to sour. (7)

27 The wrong crypt? (1, 5, 7)

DOWN

 2 A great place to keep it in mind. (7)

 3 Nothing to hold, but often held. (7)

 4 Should such coats be orange-colored? (7)

 5 What your chiId does in great form on the Ides of March? (7)

 6 She's of the blood royal. (7)

 7 Study with address, to touch on a subject. (7)

 8 Tossing out your mother-in-law (perhaps in the absence of 1)? (8, 5)

 9 Disproving the phrase "as deaf as a post." (9, 4)

17 Knotty problems are solved by it. (7)

18 A "B" and an "A". (7)

19 An ugly object rose up in view. (7)

20 Apt in my responding to a blow on the head, (7)

21 Examine pins, etc. (7)

22 Pick this, but there's no point to it. (7)

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