Henry Holt announced today that it will publish The Mirror & the Light, the final book in Hilary Mantel’s series about Thomas Cromwell, on March 10, 2020.

Holt has published the first two books in the trilogy—Wolf Hall and Bring Up the Bodies—and both were major bestsellers and Man Booker Prize winners in fiction in the U.K. Wolf Hall also won the National Book Critics Circle Award for fiction in 2009. The new novel will be published in the U.K. on March 5, 2020, by 4th Estate, a division of HarperCollins. Holt has sold a total of 1.5 million copies of the two previous books.

In a statement, Mantel said completing The Mirror & the Light "has been the greatest challenge of my writing life, and the most rewarding; I hope and trust my readers will find it has been worth the wait." Mantel said when she began writing about Cromwell in 2005 she did not intend to do a trilogy, but quickly realized "the richness and fascination of this extraordinary life."

Steve Rubin, chairman of Holt, said he is looking forward to the release of the last chapter of the Cromwell story. "It is a pleasure of tremendous magnitude to publish the final volume of this extraordinary trilogy by Hilary Mantel," he said.