Snowbound secrets, shifter wars, family lies, and epic battles — September delivers it all.

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The Key To A Killer, October 2026
Hardcover / e-Book / audiobook
Death At The Door, November 2025
Hardcover / e-Book
A New Lease on Death, November 2024
Hardcover / e-Book
Rhythm and Clues, April 2024
Mass Market Paperback / e-Book
A Fatal Groove, August 2023
Mass Market Paperback / e-Book
Vinyl Resting Place, January 2023
Mass Market Paperback / e-Book
No Memes of Escape, October 2021
Trade Size / e-Book
Killer Content, February 2021
Trade Size / e-Book

THE KEY TO A KILLER
By: Olivia Blacke

The Ruby and Cordelia Mysteries #3
Minotaur Books
October 2026
On Sale: October 20, 2026
368 pages
ISBN: 1250336732
EAN: 9781250336736
Kindle: B0G75MFXXB
Hardcover / e-Book / audiobook
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Mystery Woman Sleuth | Mystery Amateur Sleuth

A woman and her ghost roommate investigate their most personal case yet in Olivia Blacke’s The Key to a Killer, the next book in the Anthony Award winning Ruby and Cordelia Mysteries.

When Ruby Young discovered that her Boston apartment was haunted, she did what any reasonable person would do: befriend the ghost. Their relationship overcame a shaky start—Cordelia Graves never wanted a roommate in life, she certainly didn’t want one in death. After working together to solve a few murders, the two are close friends, but there’s a lingering question neither of them have been able to answer: what led to Cordelia’s death?

Lately things have been adding up that suggest foul play. And when Cordelia’s memories of that day start to come back, the roommates can’t ignore it anymore: Cordelia was murdered. Ruby and Cordelia are going to have to piece together what Cordelia’s final days looked like—otherwise a killer could go free.

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