Porter Square Books is delighted to present a virtual event with award-winning author Mick Herron to celebrate his upcoming book, The Secret Hours! The author will be joined in conversation by Michael Connelly. This event will be hosted virtually via Crowdcast on Monday, September 11 at 1pm ET.

Signed copies of The Secret Hours are available while supplies last- you can preorder yours from our website now.

A gripping standalone spy thriller from the #1 Sunday Times bestselling author of Slow Horses, with a riveting reveal about a disastrous MI5 mission in Cold War Berlin—an absolute must-read for Slough House fans.

New from the author of Slow Horses, now an Apple Original series from Apple TV+, starring Gary Oldman and Kristin Scott Thomas.

Two years ago, a hostile Prime Minister launched the Monochrome inquiry, investigating "historical over-reaching" by the British Secret Service. Monochrome’s mission was to ferret out any hint of misconduct by any MI5 officer—and allowed Griselda Fleet and Malcolm Kyle, the two civil servants seconded to the project, unfettered access to any and all confidential information in the Service archives in order to do so.

But MI5’s formidable First Desk did not become Britain’s top spy by accident, and she has successfully thwarted the inquiry at every turn. Now the administration that created Monochrome has been ousted, the investigation is a total bust—and Griselda and Malcolm are stuck watching as their career prospects are washed away by the pounding London rain.

Until the eve of Monochrome’s shuttering, when an MI5 case file appears without explanation. It is the buried history of a classified operation in 1994 Berlin—an operation that ended in tragedy and scandal, whose cover-up has rewritten thirty years of Service history.

The Secret Hours is a dazzling entry point into Mick Herron’s body of work, a standalone spy thriller that is at once unnerving, poignant, and laugh-out-loud funny. It is also the breathtaking secret history that Slough House fans have been waiting for.

Mick Herron is a British novelist and short story writer who was born in Newcastle and studied English at Oxford. He is the author of the Slough House espionage series, four Oxford mysteries, and three standalone novels. His work has won the CWA Gold Dagger for Best Crime Novel, the Steel Dagger for Best Thriller, the Theakston’s Novel of the Year Award, the Palle Rosenkrantz Prize, the Ellery Queen Readers Award and the USC Libraries Scripter Award, and been nominated for the Macavity, Barry and Shamus Awards. He currently lives in Oxford and writes full-time.

Michael Connelly is the bestselling author of more than thirty novels and one work of nonfiction. With over eighty-five million copies of his books sold worldwide and translated into forty-five foreign languages, he is one of the most successful writers working today. A former newspaper reporter who worked the crime beat at the Los Angeles Times and the Fort Lauderdale Sun-Sentinel, Connelly has won numerous awards for his journalism and his fiction. His very first novel, The Black Echo, won the prestigious Mystery Writers of America Edgar Award for Best First Novel in 1992. In 2002, Clint Eastwood directed and starred in the movie adaptation of Connelly's 1998 novel, Blood Work. In March 2011, the movie adaptation of his #1 bestselling novel, The Lincoln Lawyer, hit theaters worldwide starring Matthew McConaughey as Mickey Haller. His most recent New York Times bestsellers include Desert Star (2022), The Dark Hours (2021), The Law Of Innocence (2020), Fair Warning (2020), and The Night Fire (2019). Michael is the executive producer of Bosch and Bosch: Legacy, Amazon Studios original drama series based on his bestselling character Harry Bosch, starring Titus Welliver and streaming on Amazon Prime/Amazon Freevee. He is the executive producer of The Lincoln Lawyer, streaming on Netflix, starring Manuel Garcia-Rulfo. He is also the executive producer of the documentary films, "Sound Of Redemption: The Frank Morgan Story' and 'Tales Of the American.' He spends his time in California and Florida.

Mick Herron, author of The Secret Hours, in conversation with Michael Connelly