3: Trashy dime novel about American sex symbol who's not all there? (5,2,4)
8: Almost insane deviation around road works (7)
10: Good girls in spectacles (7)
11: How to secure man-haters at last (5)
13: Breaking promise, strip back nightie (9)
14: Barque, for one, is a trio-tutor (5-6)
16: Take a turn or a thousand dollars (3)
18: One later enters, like, with matching sides (11)
20: It's truly deep at sea, so they say (9)
23: Ms. Messing to remove underwear? (5)
24: Attack raise with no return (3,4)
25: Styli nearly unnecessary (7)
27: Goes through ere sixpence circulates (11)