[1] Early on, even before The Bone Orchard Mythos was announced, Jeff Lemire described the project as "the most ambitious thing [Andrea Sorrentino] and I have done together.

[5] It was essential to both creators though that any story could act as an entry point to the series, that they could be read in any order and still make sense.

[6] Over a period of a year before the series was announced, Lemire and Sorrentino worked out the whole story, plotted out in chronological order.

[3] The series was announced with a teaser trailer on Halloween 2021[7] with further details emerging over the following week from the social media channels of Lemire, Sorrentino, and Image Comics.

[1] Originally published as a one-shot story for Free Comic Book Day (FCBD) 2022, Shadow Eater was designed to be "an appetizer for the horror to come.

When Lemire and Sorrentino were originally discussing possible stories to act as the reader's introduction to The Bone Orchard Mythos, Tenement was their initial choice before later settling on The Passageway.

[36] The story was originally scheduled for release in 2024,[75] until Lemire announced an indefinite hiatus for The Bone Orchard Mythos.