1: Talk foolishly

4: Feature of Karloff's Frankenstein monster

8: Tenth letter of the Greek alphabet

13: She may get sheared

14: Ballyhoo

15: More spirited

16: Vacation spot

18: Grommet

19: Beloved Ralph and Alice?

21: Curly coif

24: School of whales

25: Answering-machine sound

26: Go before?

33: Massage

34: Litigates

35: Clarence in 'It's a Wonderful Life'

36: Absolutely sure

38: Western wear

40: Bit of fact

41: Current producers

42: ___ for tat

43: Holmes mantra, and a hint to this puzzle's theme

46: Proofreader's mark

47: Many, many moons

48: Secondhand

49: Ones who tell you when your slip is showing?

57: Connected

58: Well-organized, in a sense

62: Extremists

63: Hulks pump it

64: Historical period

65: Add insult to injury

66: Dermatologist's concern

67: Swab

1: 'Sure thing!'

2: Electrify

3: Soup veggie

4: 'Flee, fly!'

5: Printer's ink color

6: Church recess

7: Does over, as a manuscript

8: It's a bout done

9: Last word in prayer

10: Fortune

11: Look narrowly

12: They may be liberal

15: Crystal-lined rock

17: Rough waters

20: Stylish, in the '60s

21: Wear away

22: Like the Middle Ages

23: Sales incentive

26: Groaner

27: Out of work? (abbr.)

28: Shows the door, perhaps

29: Wrap up

30: Glass marbles

31: Not thinking well

32: On cloud nine

34: Identical

37: It's the word

38: Block passage through

39: Whichever

41: Fervent one

44: Geeks

45: Water temperature 'gauge'

46: 'Bunnies' under the bed

49: Commercial endorsement

50: Lunar valley

51: Not fooled by

52: Gumbo vegetable

53: Tour de force

54: Blue fish in 'Finding Nemo'

55: Qualities of the conceited

56: Monthly payment, for many

59: Noah's second son

60: Teamwork deterrent

61: One's good name, briefly