Author: Isabel J. Kim

A most-anticipated title from USA Today, Glamour, LitHub, New Scientist, The Nerd Daily, Library Journal, and more!

Doppelgngers, corporate intrigue, heartbreak, betrayal, and the harsh permanence of the border: Sublimation is a thrilling and provocative debut for fans of Severance that asks what you'd sacrifice for a different life from award-winning author Isabel J. Kim.

"One of the best debuts of the year." --John Scalzi, New York Times bestselling author of Starter Villain

The border cuts you in two.

When you immigrate, you leave a copy of yourself behind, an instance. One person enters their new country; the other stays trapped at home.

Some instances keep in touch, call each other daily, keep their lives and minds in sync in the hopes of reintegrating and resuming a life as one person. Others, like Soyoung Rose Kang, leave home at ten years old and never speak to their other selves again. Rose, in America, never imagined going back to Korea until her grandfather died and her Korean instance called her home for the funeral.

She doesn't know that Soyoung plans to steal her body and her life.

How far would you go to live the choice you didn't make?

"After Sublimation, the immigrant story will never be the same." --Junot Daz, Pulitzer Prize-winning author of The Brief Wondrous Life of Oscar Wao

Publisher: Macmillan Publishers (MPS)
Published: 06/02/2026
Pages: 368
Binding Type: Hardcover
ISBN: 9781250376794

Review Citation(s):
Library Journal 03/01/2026 pg. 91

About the Author
Isabel J. Kim lives near New York City in an apartment filled with books and swords. She is the author of numerous short stories and has won the Nebula, Locus, and the Shirley Jackson Award. Her work has been translated into multiple languages and reprinted in multiple best of the year anthologies. When she's not writing, she's practicing law or podcasting. Sublimation is her first novel.