The current book is ‘Ice’ by Anna Kavan
published in 1967. Ice was Kavan’s last work to be published before her death, the first to land her mainstream success, and remains her most well-known work. Generally regarded as genre-defying, it has been labelled as a work of science fiction, Nouveau roman, and literary slipstream.
For those who like some background ahead of reading a work, here is an interesting pdf on her work, life and art: