The Locked Room
Pandemic lockdowns have Ruth Galloway feeling isolated from everyone but a new neighbor—until Nelson comes calling, investigating a decades-long string of murder-suicides that’s looming ever closer, in USA Today Elly Griffiths’ penultimate novel in the beloved series. Three years after her mother’s death, Ruth is finally sorting through her things when she finds a curious a decades-old photograph of her own Norfolk cottage— before she lived there—with a peculiar inscription on the back. Ruth returns to the cottage to uncover its meaning as Norfolk’s first cases of Covid-19 make headlines, leaving her and Kate to shelter in place there. They struggle to stave off isolation by clapping for frontline workers each evening and befriending a kind neighbor, Zoe, from a distance. Meanwhile, Nelson is investigating a series of deaths of women that may or may not be suicide. When he links a case to an archaeological discovery, he breaks curfew to visit Ruth and enlist her help. But the further Nelson investigates the deaths, the closer he gets to Ruth’s isolated cottage—until Ruth, Zoe, and Kate all go missing, and Nelson is left scrambling to find them before it’s too late.
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Elly Griffiths
Thank you for visiting my Amazon author page! I'm the author of the Dr Ruth Galloway books, the Brighton Mysteries and four standalone titles featuring DI Harbinder Kaur. I've also written a middle grade mystery series, A Girl Called Justice. My new series, about time-travelling detective Ali Dawson, started in 2025 with The Frozen People.
I was born in London but moved to Brighton when I was five. I always wanted to be an author and wrote my first detective story, The Hair of the Dog, when I was 11. I studied English at King's College London and worked in a library before joining HarperCollins as a publicity assistant, eventually becoming editorial director for children's fiction. I wrote my first published novel, The Italian Quarter, whilst on maternity leave expecting my twins. Three other books followed, all written under my real name, Domenica de Rosa. When I wrote my first crime novel, The Crossing Places, I was advised to get a 'crime name'. I chose Elly Griffiths, after my grandmother, and have now published 32 books under that name..
Ruth Galloway
Ruth Galloway consists of fifteen primary books, and includes one additional book that complement the series but is not considered mandatory reads. The current recommended reading order for the series is provided below.

