On May 13, 2025, Susan Ryland returns in Anthony Horowitz’s Marble Hall Murders, the highly-anticipated follow-up to his New York Times bestselling, blockbuster hits Magpie Murders and Moonflower Murders, now a BBC television show in its second season.
Back in 2017, Horowitz introduced readers to editor Susan Ryeland who was forced to investigate the death of her star, mega-bestselling author Alan Conway—whose Atticus Pünd series had become something of a modern day Hercule Poirot—who she believed was murdered shortly after finishing his final novel. Reveared as one of the greatest whodunits since Agatha Christie herself was dominating the Golden Age of Mysteries, Magpie Murders was later made into a television show on the BBC, starring Lesley Manville (who also narrated the audiobook) alongside Conleth Hill (Game of Thrones, etc.) as Alan Conway, and Tim McMullan (Shakespeare in Love, etc.) as Atticus Pünd.
Currently, the BBC-produced show is in its second season, which follows Moonflower Murders (and has been retitled as such), which again follows Ryeland as she investigates a death that may be linked to past events Alan Conway wrote about in one of his earlier Atticus Pünd novels.
Now, Susan Ryeland will return for another go around in Marble Hall Murders, which instantly becomes the most anticipated mystery novel of 2025.
Marble Hall Murdes by Anthony Horowitz
Release Date: May 13, 2025
Harper
Murder links past and present once again in this mind-boggling metafictional mystery from Anthony Horowitz—another tribute to the golden age of Agatha Christie featuring detective Atticus Pund and editor Susan Ryland, stars of the New York Times bestsellers Magpie Murders and Moonflower Murders.
Editor Susan Ryeland has left her Greek island, her hotel, and her Greek boyfriend Andreas in search of a new life back in England.
Freelancing for Causton Books, she’s working on the manuscript of a novel, Pund’s Last Case, by a young author named Eliot Crace, a continuation of the popular Alan Conway series. Susan is surprised to learn that Eliot is the grandson of legendary children’s author Marian Crace, who died some fifteen years ago—murdered, Elliot insists, by poison.
As Susan begins to read the manuscript’s opening chapters, the skeptical editor is relieved to find that Pund’s Last Case is actually very good. Set in the South of France, it revolves around the mysterious death of Lady Margaret Chalfont, who, though mortally ill, is poisoned—perhaps by a member of her own family. But who did it? And why?
The deeper Susan reads, the more it becomes clear that the clues leading to the truth of Marian Crace’s death are hidden within this Atticus Pund mystery.
While Eliot’s accusation becomes more plausible, his behavior grows increasingly erratic.. Then he is suddenly killed in a hit-and-run accident, and Susan finds herself under police scrutiny as a suspect in his killing.
Three mysterious deaths. Multiple motives and possible murderers. If Susan doesn’t solve the mystery of Pund’s Last Case, she may well be the next victim.
Anthony Horowitz is one of the UK’s most prolific and successful writers, unique in being active in both adult and YA fiction, TV, theater, and journalism. Several of his previous novels were instant New York Times bestsellers. His bestselling Alex Rider series for young adults has sold more than nineteen million copies worldwide and has become a hugely successful show on Amazon Prime TV. His breakthrough murder mystery, Magpie Murders, was adapted into a miniseries for PBS. He lives in London with his wife and dog.
Readers excited to pre-order Anthony Horowitz’s Marble Hall Murders can now do so here or anywhere else books are sold.
Praised as “One of the hardest working, most thoughtful, and fairest reviewers out there” by New York Times bestselling author Lisa Scottoline, Ryan Steck has “quickly established himself as the authority on mysteries and thrillers” (Author A.J. Tata). Steck also works full-time as a freelance editor in addition to running TRBS. He is the author of FIELDS OF FIRE, which #1 New York Times bestselling author Jack Carr says “will leave you speechless and begging for more,” LETHAL RANGE, OUT FOR BLOOD, and TED BELL’S MONARCH. For more information, follow him on Twitter, Facebook, and BookBub. To interact with other readers and talk about your favorite books and authors, join The Real Book Spy’s Discord server.