Evening Romance

[Rcklay]

Lay the lovely lady  I read this as an inversion of "the lovely lady lay" although it could also be imperative ("Lay the ... lady [down]")
Lap laden with garlands of lace
Legs, lush and lusty
Layers of flesh  Suitably disquieting - a particularly gory murder or looking onward to autopsy
Layers of lie
After lie
After lie  conflicting evidence and testimony

Leering lookers low to the floor  nice:  not "onlookers," they're participating in the scene
Affixed on all fangled fours  "fangled" is notable - detectives nosing around the corpse seeking clues in the nap of the rug
Foppish fellows
This one feeble
that one foul

Night knows the gnarly truth  "gnarly" is good - looks like a relief from the N's but isn't
A nearing needle for those who kneel
In her name.  Night (personified) as Justice and Nemesis
Night is nesting the knave
She numbers them one
By one 
By one.  As the System gets going, suspects are eliminated until all the threads converge on one.  Night smiles.

In basic critique, and after reading through only a couple of times, I see this as a crime scene.  In the first stanza, the scene is described; in the second, detectives (in modern parlance, technicians) examine it; the third... wheels of justice begin to grind.

(Not sure how much I've over- or misinterpreted here, but it's one way of seeing your poem.  As poets, we must put up with that sometimes.)

Minor inconsistencies in grammar and typography (capitalization, punctuation) are noted but not serious.  Most wouldn't notice the lack of a period here or a line not capitalized - are they worth it, in that case, or would standard typography work as well?

Some might not like the use of repetition in S1 and S3.  I think it works reasonably well; one repetition in each case - doing without the second - might be better.

This interpretation and analysis is well within the ballpark of the poem’s intent. I’m encouraged to know that the scene unfolds for the reader the way I had hoped. 

To address the comment about the first line: I aimed to leave some question/ambiguity here. Is the lady playing an active or passive role? Did she get here by choice or by coercion? Even she may not know the answer.