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

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Also by Katherine Lyons:

A Secret Elixir, May 2026
Paperback / e-Book
An Alluring Brew, February 2026
Paperback / e-Book
Ghosts, Graveyards, and Grey Ladies, November 2025
e-Book
The Truth Serum, October 2025
Paperback / e-Book
The Love Potion, June 2025
Paperback / e-Book
Rules for a Wicked Wager, May 2025
e-Book
Rules for a Bastard Lord, March 2025
Paperback / e-Book
Rules for a Fake Fiancé, February 2025
Paperback / e-Book

THE TRUTH SERUM
By: Katherine Lyons

Regency Historical Romance

My Lady's Potions #2
Dragonblade Publishing
October 2025
On Sale: September 28, 2025
Featuring: Lord Nathaniel; Lady Rebecca
ISBN: 1969349158
EAN: 9781969349157
Kindle: B0FNF845RT
Paperback / e-Book
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Romance Historical

After five fruitless Seasons, can she pick a plum?

Lady Rebecca has spent ten years trying to forget the boy who stole her heart—and destroyed her family. Now Lord Nathaniel is back, still recklessly charming and absolutely forbidden. A man who cares for nothing but his own pleasure.

Or so it seems. Beneath Nate’s carefully crafted façade are secrets that could tip the war against Napoleon. Nate is a spy, and he desperately needs Rebecca's help. But can she trust a feckless rake in defiance of their family feud and her brother’s mysterious plans?

When a marriage contract could bind her to a traitor, Rebecca turns to the most dangerous weapon of all—a mysterious truth serum that reveals not just lies, but the most inconvenient desires of the heart. And when the serum goes awry, half-dressed barons and ballroom scandals are the least of Rebecca’s problems.

In a world where trust leads to betrayal, can two childhood sweethearts overcome a decade of deception to save regency England—and each other?