Now out-Guilty by Definition by Susie Dent

I first read about this book when it was published in England and knew that I would want to read it. My favorite genre-mystery- plus an Oxford setting and a lot about words. (I loved The Bookbinder which was historical fiction set in Oxford with much about words). So, getting this book from NetGalley was a real treat. It did not disappoint.

Readers meet Martha who works for the Clarendon English Dictionary which feels like a fictional stand in for the OED. She and her colleagues including Simon, Alex and Safi get to deal with words as their profession. They are just four of the many characters in this story.

As the book opens, there is a staff meeting and all seems pretty much as usual until an odd letter arrives. It takes a bit but Martha comes to realize that this letter may be referencing the disappearance of her talented, bright and beautiful sister thirteen years ago. No one knows what became of Charlie? Who is “chorus,” the anonymous letter writer? What other messages will be received? What did happen to Charlie?

From this point in, I was so drawn in and spent as much time as I could reading the story. There were also some fun treats along the way with various vocabulary words. For example, I loved conjobble which was defined as eat, drink and talk!

Still, while the English vocabulary references were great fun, it was the story that kept me intrigued. Publishers Weekly described this book as a “treat.” I definitely agree.

I am delighted to know that this is the first in a series. I can’t wait for more.

Many thanks to NetGalley and Sourcebooks for this title. All opinions are my own.

Pub date: 30 September 2025

384 pages

Mystery & Suspense

Editorial Reviews

Review

“There are pleasures here for anyone who revels in the joy of text.” ― Kirkus Reviews

“Etymologist Dent makes an impressive fiction debut with a clever whodunit that pivots on her linguistic expertise…a tantalizing puzzle for Anglophiles and Golden Age mystery lovers alike.” ―Publishers Weekly

“Linguist Dent proves she is a talented wordsmith in her own right, diverting readers with historical and lexicological tidbits throughout the story…Martha and her team are whip-smart and fun, providing a light juxtaposition to the suspense elements, while the lush and vibrant descriptions of Oxford create a lovely sense of place; readers will be both informed and entertained.” ― Library Journal

“If you’re like me and love both language and crime, then Guilty by Definition has it all. Susie Dent’s impressive debut novel is virtuosic. So meticulously and fascinatingly steeped in the archaic glory of words, it will surely be the ultimate treat for every logophile out there. But this is so much more than a celebration of the dictionary – it’s a tantalizing mystery of a missing sister, a cold case that will not lie down, and a family frozen in their unresolved grief… all while their circle of friends and colleagues nurse secrets and lies beyond explication. Guilty by Definition is positively aglitter with etymological and detecting treasures for word-sleuths and crime-fans alike.” ― Janice Hallett, Sunday Times bestselling author of The Appeal

Next in the series:

Publisher’s Synopsis-From the British publisher

A brand-new linguistic mystery from Countdown‘s resident lexicographer, Susie Dent, set in the city of Oxford

**AVAILABLE TO PRE-ORDER NOW**

When mysterious symbols appear as graffiti around Oxford, lexicographer Martha Thornhill recognises them from a runic alphabet created by a deceased fantasy writer whose papers she once worked on. But this is no publicity stunt, and tensions intensify when further graffiti is found near the body of a university lecturer.

Martha is not the only one to have doubts when the suspicious death is ruled by police as suicide. Called upon to lend their linguistic expertise to the case, Martha and her colleagues begin to unearth a tragedy that extends beyond the ancient walls of the university. As new messages portend more death, it’s clear that a spirit of vengeance is stalking the city’s streets, and may be reaching out towards them too.