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Also by Margot Douaihy:

Divine Ruin, January 2026
Hardcover / e-Book / audiobook
Blessed Water, March 2024
Hardcover / e-Book
Scorched Grace, March 2023
Hardcover / e-Book

DIVINE RUIN
By: Margot Douaihy

Sister Holiday Mysteries #3
Gillian Flynn Books
January 2026
On Sale: January 13, 2026
336 pages
ISBN: 1638931984
EAN: 9781638931980
Kindle: B0F52GXBX7
Hardcover / e-Book / audiobook
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Mystery Hard Boiled | Mystery Amateur Sleuth | Thriller Crime

It’s a steamy, restless end of the school year in New Orleans. Sister Holiday is finishing her music classes and preparing for her permanent vow ceremony, a pivotal moment in her journey of faith. But when one of her favorite students is found dead of a fentanyl overdose, Sister Holiday and her partner-in-PI, Magnolia Riveaux, are determined to track down the drug dealers. As students continue to fall prey tothis sinister drug, Sister Holiday becomes more desperate to stop the epidemic—while facing her own past with addiction, a demon that is never too far.

With Douaihy’s signature mix of grit, heart, and faith, Divine Ruin tests the limits of Sister Holiday’s devotion in her darkest and most shocking case yet.

Sister Holiday Mysteries

SCORCHED GRACE

#1.0 • March 2023

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BLESSED WATER

#2.0 • March 2024

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DIVINE RUIN

#3.0 • January 2026

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