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The Incident of the Book in the Nighttime

A Sherlock Holmes Bookshop Mystery

Paperback
$19.99 US
5-1/2"W x 8-1/4"H | 13 oz | 24 per carton
On sale Oct 21, 2025 | 304 Pages | 9798892425162

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Bookshop owner Gemma Doyle heads to London for a wedding, but when a body is found in connection with a rare book, Gemma sets out to sleuth the slaying in bestselling author Vicki Delany's tenth Sherlock Holmes Bookshop mystery.

Gemma Doyle and her friends have packed their bags and headed to London for her sister Pippa’s wedding. Waiting for her in the hotel lobby is none other than Gemma’s ex-husband, Paul Erikson. Paul has a rare book he wants her to see—calling it “the real deal”—so Gemma agrees to meet him at their old shop, Trafalgar Fine Books, the following day. But when Gemma arrives, accompanied by Grant, a rare book dealer, they find Paul dead in his office.

Paul had been down on his luck, but Gemma never expected this. Had he borrowed money from people he shouldn’t have? And where is the valuable book he was so anxious for Gemma to see? It’s nowhere to be found in the shop. Because of their previous relationship, Gemma feels she owes something to Paul and vows to find his killer.

As Gemma and her best friend Jayne Wilson follow Paul’s trail of friends, enemies, clients, and ex-lovers through London to Yorkshire, she realizes the puzzle of Paul’s last days is more twisted than she originally thought.

This mystery is anything but elementary, and Gemma and Jayne have to use all their wit to get to the bottom of it before their time in London—or in life—is over.
Praise for The Incident of the Book in the Nighttime:
“Plenty of suspects and a well-hidden motive give the sleuths a run for their money.”
Kirkus

“Fans who traveled to London with the crew in There’s a Murder Afoot will enjoy the return.”
Library Journal

"The familiar cast of well-drawn characters, the beautifully described London setting, Sherlock Holmes trivia, and multiple plot twists add up to a satisfying cozy."
Booklist

The Incident of the Book in the Nighttime will prove to be an immediate and enduringly welcome addition to personal reading lists and community library Mystery/Suspense collections.”
Midwest Book Review

“My favorite in this series so far.”
Cozy Mystery Book Reviews

“Fans of the series will enjoy this latest one.”
Red Carpet Crash
Vicki Delany is one of Canada’s most prolific and varied crime writers and a national bestseller in the U.S. She has written more than fifty books: clever cozies to Gothic thrillers to gritty police procedurals, to historical fiction and novellas for adult literacy. 

She is a past chair of the Crime Writers of Canada and co-founder and organizer of the Women Killing It Crime Writing Festival.  She is the recipient of the 2019 Derrick Murdoch Award for contributions to Canadian crime writing.  Vicki lives in Prince Edward County, Ontario.

About

Bookshop owner Gemma Doyle heads to London for a wedding, but when a body is found in connection with a rare book, Gemma sets out to sleuth the slaying in bestselling author Vicki Delany's tenth Sherlock Holmes Bookshop mystery.

Gemma Doyle and her friends have packed their bags and headed to London for her sister Pippa’s wedding. Waiting for her in the hotel lobby is none other than Gemma’s ex-husband, Paul Erikson. Paul has a rare book he wants her to see—calling it “the real deal”—so Gemma agrees to meet him at their old shop, Trafalgar Fine Books, the following day. But when Gemma arrives, accompanied by Grant, a rare book dealer, they find Paul dead in his office.

Paul had been down on his luck, but Gemma never expected this. Had he borrowed money from people he shouldn’t have? And where is the valuable book he was so anxious for Gemma to see? It’s nowhere to be found in the shop. Because of their previous relationship, Gemma feels she owes something to Paul and vows to find his killer.

As Gemma and her best friend Jayne Wilson follow Paul’s trail of friends, enemies, clients, and ex-lovers through London to Yorkshire, she realizes the puzzle of Paul’s last days is more twisted than she originally thought.

This mystery is anything but elementary, and Gemma and Jayne have to use all their wit to get to the bottom of it before their time in London—or in life—is over.

Praise

Praise for The Incident of the Book in the Nighttime:
“Plenty of suspects and a well-hidden motive give the sleuths a run for their money.”
Kirkus

“Fans who traveled to London with the crew in There’s a Murder Afoot will enjoy the return.”
Library Journal

"The familiar cast of well-drawn characters, the beautifully described London setting, Sherlock Holmes trivia, and multiple plot twists add up to a satisfying cozy."
Booklist

The Incident of the Book in the Nighttime will prove to be an immediate and enduringly welcome addition to personal reading lists and community library Mystery/Suspense collections.”
Midwest Book Review

“My favorite in this series so far.”
Cozy Mystery Book Reviews

“Fans of the series will enjoy this latest one.”
Red Carpet Crash

Author

Vicki Delany is one of Canada’s most prolific and varied crime writers and a national bestseller in the U.S. She has written more than fifty books: clever cozies to Gothic thrillers to gritty police procedurals, to historical fiction and novellas for adult literacy. 

She is a past chair of the Crime Writers of Canada and co-founder and organizer of the Women Killing It Crime Writing Festival.  She is the recipient of the 2019 Derrick Murdoch Award for contributions to Canadian crime writing.  Vicki lives in Prince Edward County, Ontario.