Margins
The Locked Room book cover
The Locked Room
2026
First Published
4.25
Average Rating
224
Number of Pages

Part of Series

The BRAND NEW instalment in Holly Hepburn's Baker Street Mystery series - for fans of Sherlock Holmes! Join Harriet White in 1930's London for another glorious Sherlock Holmes-inspired mystery, for fans of Nita Prose and Janice Hallett. After a very close call on the Norfolk Fens, Harriet White is about ready to hang up her deerstalker and settle into life in the Baker Street building society where she works. Until she discovers a letter in The Times newspaper challenging Sherlock Holmes to prove his status as the world’s greatest detective by solving an impossible mystery. The letter, signed Professor James Moriarty, advises Holmes that the crime will be committed within the following seven days. There will be no further clues – Holmes himself must deduce which crime is the correct one to investigate. Dismissing the letter as a prank, Harry goes about her business until news breaks of the theft of valuable jewel collection from a safe in an apparently locked room in a Mayfair townhouse. Intrigued in spite of her misgivings, Harry dons a disguise and investigates. But as she begins to unpick the puzzle, a body is found. And now, a stranger, and far more deadly mystery begins to unfold around her... Praise for Holly ‘Honestly I couldn’t find one bad thing to say about this book! I’m a new fan for sure!’ Goodreads review ⭐️⭐️⭐️⭐️⭐️ ‘The Missing Maid is a delightful book. I loved Harry. She’s warm, funny, sassy and brave. I’m very much looking forward to reading what Holly brings us next in this series.’ Goodreads review ⭐️⭐️⭐️⭐️⭐️ ‘This is such a clever idea for a cozy mystery series! I love Harry and the twisty plot of this book. Can’t wait for the next book!’ Goodreads review ⭐️⭐️⭐️⭐️⭐️ ‘I really enjoyed this cozy mystery because it is at the intersection between cozy mystery and historical fiction and it is simply brilliant. Hepburn weaves a strong plotline and Harry shines throughout. A real pleasure to read.’ Goodreads review ⭐️⭐️⭐️⭐️⭐️ ‘I am definitely a Sherlock Holmes fan, so the premise of this story got my attention immediately, but it was the writing, characters and the new story perspective that firmly held it.’ Goodreads review ⭐️⭐️⭐️⭐️⭐️ ‘I loved everything about this historical cozy. Harry is a wonderful character. She's clever, independent and kind. The mystery of the missing maid kept me entertained throughout. The pacey drama and easy-to-read style meant that I devoured this book in one day.’ Goodreads review ⭐️⭐️⭐️⭐️⭐️ ‘This was my first exposure to the agile and creative scribblings of Holly Hepburn and I found her writing style to be smooth, immersive, and easy to follow, with issues and scenarios true to the period. I adored her conjured characters and look forward to more of these adventures.’ Goodreads review ⭐️⭐️⭐️⭐️⭐️ ‘The witty and whip-smart novel is refreshing and fabulous.

Avg Rating
4.25
Number of Ratings
183
5 STARS
40%
4 STARS
44%
3 STARS
15%
2 STARS
1%
1 STARS
0%
goodreads

Author

Holly Hepburn
Holly Hepburn
Author · 52 books

I’ve wanted to write books for adults for as long as I can remember but I was too scared to try. One day I decided to be brave and dipped a toe into the bubble bath of romantic comedy with my first novella, Cupidity, and I’ve never looked back. I often try to be funny to be funny, except for when faced with traffic wardens and border control staff. My favourite thing is making people smile. I’ve tried many jobs over the years, from barmaid to market researcher and I even had a brief flirtation with modelling. These days I am mostly found writing. I live near London with my grey tabby cat, Portia. We both have an unhealthy obsession with Marmite.

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