With TV adaptations of Magpie Murders and Moonflower Murders complete, PBS Masterpiece will adapt the third and final installment in best-selling novelist Anthony Horowitz’s Susan Ryeland series, Marble Hall Murders, next. Lesley Manville and Tim McMullan will reprise their roles for this third adaptation, PBS announced on January 29. The network revealed when Marble Hall Murders will premiere in April 2026.

Since it’s the final book in the series, is this the show’s final season? Here’s everything there is to know about Marble Hall Murders.

Originally published on tvinsider.com, part of the BLOX Digital Content Exchange.

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