Knopf

By Joan Didion Knopf: 224 pages, $32 If you buy books linked on our site, The Times may earn a commission from Bookshop.org, whose fees support independent bookstores.

By Karen Russell Knopf: 432 pages, $30 If you buy books linked on our site, The Times may earn a commission from Bookshop.org, whose fees support independent bookstores.

By Christine Murphy Knopf: 288 pages, $28 If you buy books linked on our site, The Times may earn a commission from Bookshop.org, whose fees support independent bookstores.

The book, “Notes to John,” will be published in hardcover and ebook by Knopf on April 22.

“Everything we revere about Joan Didion is instantly apparent in these pages — the precision, the fierce intelligence, the piercing insights, the withering interrogation of her own motives. Yet this is also Joan Didion as we have never seen her before — open, vulnerable, wrestling with raw emotion,” Jordan Pavlin — Knopf executive vice president, publisher and editor-in-chief — said in a press release.