When Wharton protests, Reynard's elderly housekeeper Louise explains that the East Room – which has a floor made entirely out of mirror glass – is regarded as "dangerous".

Reynard finds Wharton's body lying in the middle of the room; he removes it using a pole hook, leaving a small pool of blood on both the floor and ceiling.

[1][5][7] A copy of the Starling Mystery Stories issue is held (with other papers of King's) in the Raymond H. Fogler Library at the University of Maine.

[10] Michael R. Collings described "The Glass Floor" as "derivative, depending upon Poe and Lovecraft for its situational and atmospheric horror", while regarding it as an improvement on the "workaday prose" of King's earlier work.

"[11] Collings describes the mirrored floor from the story as an example of King's "fascination with the deadly effects of 'machines'", noting that "human responses rather than the artifact itself generate the specific horror".

[13] Revisiting the story after 23 years in 1990, King described the first several pages as "clumsy and badly written - clearly the product of an unformed story-teller's mind" but judged the climax to be "better than I remembered" with "a genuine frisson".