November 12th, 2026
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RIDER OF DRAGONS
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Undercover Lies by Mark de Castrique

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Also by Mark de Castrique:

Undercover Lies, November 2026
Hardcover
Dangerous Women, November 2023
Trade Paperback / e-Book
Secret Lives, October 2022
Trade Paperback / e-Book
Fatal Scores, March 2021
Trade Size / e-Book
Murder in Rat Alley, January 2020
Hardcover / e-Book
Hidden Scars, October 2017
Hardcover / e-Book
A Specter of Justice, November 2015
Hardcover / e-Book
Risky Undertaking, November 2014
Hardcover
A Murder in Passing, July 2013
Hardcover / e-Book
The 13th Target, July 2012
Hardcover / e-Book
The Fitzgerald Ruse, October 2011
Trade Size / e-Book
Blackman's Coffin, October 2011
Trade Size / e-Book
The Sandburg Connection, September 2011
Trade Size / e-Book
Fatal Undertaking, October 2010
Hardcover
Grave Undertaking, March 2006
Paperback

UNDERCOVER LIES
By: Mark de Castrique

Severn House
November 2026
On Sale: November 3, 2026
240 pages
ISBN: 1448316715
EAN: 9781448316717
Hardcover
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Mystery Cozy | Thriller Crime

“Ethel’s adventures will appeal to fans of Richard Osman’s Thursday Murder Club series and Deanna Raybourn’s Killers of a Certain Age” Library Journal Starred Review “Ethel looks like Marple but acts like Marlowe” Kirkus Reviews “Plucky Ethel is an elderly Nancy Drew” Publishers Weekly Badass 75‑year‑old former FBI agent Ethel Fiona Crestwater goes undercover tracking down a ruthless network of criminals in this fun and pacy installment in the Secret Lives mystery series. WWED—What Would Ethel Do? Seventy‑five‑year‑old retired FBI agent Ethel Fiona Crestwater is almost getting too old for a secret FBI mission—almost! Her expert investigation skills are needed again when her elderly neighbor and close friend Sarah Phelps is found dead at her home, shot in the heart, and with an unknown male body next to her. Turns out Sarah had a secret boyfriend who apparently killed both her and himself, but evidence points to a more serious crime. Someone is targeting wealthy senior citizens, but as far as Ethel is concerned death is too high a price to pay just for being old. Seeking justice for her friend and capitalizing on her extensive connections—law enforcement and mobsters alike—Ethel goes undercover to expose an intricate network of lies, threats, and deadly schemes that will put her at high risk—one that might cost her her life . . .