His debut fantasy novel, Someone You Can Build a Nest In, was released in April 2024 by DAW Books and Quercus.

[1][2][3] Wiswell's short fiction has been characterized as making outlandish and unsettling concepts feel familiar, often overlapping with metaphors for disability,[4] while also frequently having a "lighthearted and clever" tone.

[1] The debut novel, Someone You Can Build a Nest In, is described as a "creepy, charming monster-slaying sapphic romance — from the perspective of the monster" and was released in spring 2024.

[1][2] In 2021, Wiswell won the Nebula Award for Best Short Story[7] for his work "Open House on Haunted Hill" published in Diabolical Plots.

"Bad Doors", also published in Uncanny Magazine, was nominated for the Nebula Award for Best Short Story in 2024.