Maggie Nelson is the author of four volumes of poetry and five wide-ranging works of nonfiction that delve into the nature of violence and sexuality. From what I'd heard about her writing, I knew to expect an important and unconventional thinker with a distinctive, lyrical style. Now Vintage is making some of her backlist, including this book (originally published in 2007) and the uncategorisable ''Bluets'', available for the first time in the UK.