A Korean-American scientist who has always been haunted by a ghostly imaginary friend, and whose mother warned that the women of their family were subject to a cyclical intergenerational curse, seeks answers in her mother’s folk tales and a family history riddled with war and loss, as the fate of her ancestors closes in on her. Now in trade paperback.A New York Times Best Sci-Fi and Fantasy Novel of 2021An NPR Best Book of 2021A genre-defying, continents-spanning saga of Korean myth, scientific discovery, and the abiding love that binds even the most broken of families.Elsa Park is a particle physicist at the top of her game, stationed at a neutrino observatory in the Antarctic, confident she's put enough distance between her ambitions and the family ghosts she's run from all her life. But it isn't long before her childhood imaginary friend―an achingly familiar, spectral woman in the snow―comes to claim her at last.Years ago, Elsa's now-catatonic mother had warned her that the women of