Press release War is coming, but that isn't the only danger. Dr Margaret Demeray returns in A Deadly Promise. August 18, 2025

A murder in the shadows. A war on the horizon. And one woman racing to expose the truth.

London, August 2025 – dp books is proud to announce the upcoming release of A Deadly Promise by Paula Harmon, the long-awaited all-new sixth instalment in the beloved Dr Margaret Demeray series – now available for pre-order.

Set in the tense summer of 1914, as Britain teeters on the brink of war, A Deadly Promise sees pioneering pathologist Dr Margaret Demeray drawn into a mystery that begins with a seemingly random murder in a London backstreet before quickly spiralling into something far more dangerous.

As Margaret begins to connect the killing to a suspicious death nearby, she is pulled into a web of stolen identities, buried secrets and political unrest. With her trusted ally Fox tracking arms smugglers to Ireland and pressure mounting from those eager to silence her, Margaret must risk everything to uncover a conspiracy that could threaten Britain itself.

Praised for its sharp historical detail, compelling characters, and taut suspense, the Dr Margaret Demeray series has become a firm reader favourite. Blending gripping mystery with rich period atmosphere, A Deadly Promise is a story of trust, betrayal and resilience in the face of impending disaster.

A Deadly Promise is now available for preorder on Amazon and Kindle Unlimited. Official release is set for 18th September – don’t miss the next chapter in this unforgettable series.

Want to explore more from Paula Harmon and Dr Margaret Demeray? Click here to dive into the series and uncover the secrets of Edwardian London.