The memoir Nova Bordelon was writing last season on “Queen Sugar” hits shelves in Season 4. “Blessing and Blood” makes quite a splash, but the buzz isn’t all positive. A new trailer for “Queen Sugar” is here, and suggests Nova’s commitment to honesty in her prose came at the cost of her family’s privacy.

“We have a secret,” Nova (Rutina Wesley) says of her family during an interview, “ugliness is also within us. I believe it is our secrets that are killing us.”

It’s not clear exactly what Nova revealed in her book, but the spot suggests she mentioned the true parentage of her brother Ralph Angel’s (Kofi Siriboe) son, the love child her brother-in-law fathered while still married to Nova’s sister, Charley (Dawn-Lyen Gardner), and deeply personal conflicts she, her siblings, and the extended family have weathered over the years.

Needless to say, Charley, Ralph Angel, and the rest of the Bordelons are not pleased with Nova. Ralph Angel has to remind her he’s her brother, not her “research.” Charley must explain how she comes off in the memoir to her son and colleagues. “What’s black and white on the pages of a book is often very gray in real life,” she says.

Ava DuVernay created “Queen Sugar.” An adaptation of Natalie Baszile’s novel of the same name, the series has been directed solely by women. Season 4’s helmers include Cheryl Dunye (“The Watermelon Woman”), Carmen Marrón (“Go For It”), Numa Perrier (“Jezebel”), Heidi Saman (“Namour”), Bola Ogun (“Are We Good Parents”), and Tchaiko Omawale (“Solace”).

“Queen Sugar’s” fourth season premieres June 12 on OWN.