The Key To A Killer (Ruby And Cordelia Mysteries #3)

The Key To A Killer (Ruby And Cordelia Mysteries #3) by Olivia Blacke is a Mystery release out on October 20, 2026.

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The Key To A Killer (Ruby And Cordelia Mysteries #3)

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The Key To A Killer (Ruby And Cordelia Mysteries #3) Release Date: October 20, 2026

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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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Genre: Mystery

Olivia Blacke

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