Theories

Various theories have cropped up surrounding The Sleeper's Player, owing to its mysterious nature.

Margaret Theory
The most popular theory, which states that "Margaret," first mentioned in the description of Duke Enlivened By Forgotten Battle, is the subject of the series.

Margaret Door
May be a member of The Urban Society of the Raven and may have murdered Mr. Door.

Mr. Door
May have been murdered by his daughter Margaret.

Mrs. Door
Margaret's mother.

Representation Theory
This theory suggests that Mr. and Mrs. Door represent, respectively, Earth/life and the apocalypse/death.