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Cover of Divine Ruin

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Our take

Sister Holiday is weeks from her permanent vows when one of her students turns up dead of a fentanyl overdose. Her own history with addiction makes the case personal fast. She and her partner, a private investigator, go undercover with a local gang to find who's supplying. Her faith and sobriety both get tested at once. Third in the series, it keeps building on the central relationship and backstory from the earlier books rather than resetting. The nun-detective setup does real work here, not just costume flavor, since the collar shapes what doors open and close for her.

Content-wise, expect the specific tension of a nun working a case that keeps intersecting with her own addiction history. It's treated with real weight rather than as a quirky detail. The noir atmosphere runs through the New Orleans setting and tone, all shadows and moral compromise. As a thriller, the pacing stays tight, with the undercover plot escalating fast once the drug ring comes into focus.

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Publisher's description

It's a steamy, restless end of the school year in New Orleans. Sister Holiday is busy teaching music classes and preparing for her permanent vow ceremony, a pivotal moment in her journey of faith. But when one of her favourite students is found dead of a fentanyl overdose, Sister Holiday and her partner-in-PI, Magnolia Riveaux, are launched on a mission to track down the drug dealers. As students continue to fall prey to this sinister drug under her watch, Sister Holiday becomes more and more desperate to stop the epidemic. All the while, she must contend with her own past with addiction, a demon that is never too far. As she goes deep undercover with a local gang, Sister Holiday's darkest and most shocking case yet will test the limits of her faith-and her sanity.

Publisher
Allen & Unwin
First published
2026

Available formats

  • Print336 pages · ISBN 9781805335689

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