"Charlotte, now the Countess of Wrexford, would like nothing more than a summer of peace and quiet with her new husband ... But when Wrexford and their two young wards, Raven and Hawk, discover a body floating in Hyde Park's famous lake, that newfound peace looks to be at risk. The late Jeremiah Willis was the engineering genius behind a new design for a top-secret weapon, and the prototype is missing from the Royal Armory's laboratory. Wrexford is tasked with retrieving it before it falls into the wrong hands"--

USA Today bestselling author Andrea Penrose's atmospheric mystery series sends newlywed sleuths, Lady Charlotte and the Earl of Wrexford, beyond the glittering ballrooms and salons of Regency London to untangle a web of international intrigue... Charlotte, now the Countess of Wrexford, would like nothing more than a summer of peace and quiet with her new husband and their unconventional family and friends. Still, some social obligations must be honored, especially with the grand Peace Celebrations unfolding throughout London to honor victory over Napoleon. But when Wrexford and their two young wards, Raven and Hawk, discover a body floating in Hyde Park's famous lake, that newfound peace looks to be at risk. The late Jeremiah Willis was the engineering genius behind a new design for a top-secret weapon, and the prototype is missing from the Royal Armory's laboratory. Wrexford is tasked with retrieving it before it falls into the wrong hands. But there are unsettling complications to the case-including a family connection. Soon, old secrets are tangling with new betrayals, and as Charlotte and Wrexford spin through a web of international intrigue and sumptuous parties, they must race against time to save their loved ones from harm-and keep the weapon from igniting a new war . . .

Charlotte, now the Countess of Wrexford, would like nothing more than a summer of peace and quiet with her new husband and their unconventional family and friends. Still, some social obligations must be honored, especially with the grand Peace Celebrations unfolding throughout London to honor victory over Napoleon.

For fans of Bridgerton looking for a mysterious twist on the glittering ballrooms of the Regency—a masterfully plotted story from a USA Today bestselling author that combines engaging protagonists with rich historical detail and international intrigue, plus a touch of romance that readers of Amanda Quick and Deanna Raybourn will savor. “[Penrose] mixes well thought out mysteries, early forensic science, great details of the era and a slow burning attraction creating a compulsive read.” —The New York Public Library Charlotte, now the Countess of Wrexford, would like nothing more than a summer of peace and quiet with her new husband and their unconventional family and friends. Still, some social obligations must be honored, especially with the grand Peace Celebrations unfolding throughout London to honor victory over Napoleon. But when Wrexford and their two young wards, Raven and Hawk, discover a body floating in Hyde Park’s famous lake, that newfound peace looks to be at risk. The late Jeremiah Willis was the engineering genius behind a new design for a top-secret weapon, and the prototype is missing from the Royal Armory’s laboratory. Wrexford is tasked with retrieving it before it falls into the wrong hands. But there are unsettling complications to the case—including a family connection. Soon, old secrets are tangling with new betrayals, and as Charlotte and Wrexford spin through a web of international intrigue and sumptuous parties, they must race against time to save their loved ones from harm—and keep the weapon from igniting a new war . . . “A charming, action-packed mix of historical mystery and Regency romance.” — Kirkus Reviews “Fascinating and well-researched historic events… a colorful depiction of Regency England.” –Publishers Weekly

Series order taken from author's website.

"When Lord Wrexford discovers the body of a gifted inventor in a dark London alley, he promptly alerts the watchman and lets the authorities handle the matter. But Wrexford soon finds himself drawn into the murder investigation when the inventor's widow begs for his assistance, claiming the crime was not a random robbery. It seems her husband's designs for a revolutionary steam-powered engine went missing the night of his death. The plans could be worth a fortune ... and very dangerous in the wrong hands"--Amazon.com

In Regency London, an unconventional scientist and a fearless female artist team up to trap a cold-hearted killer: “Thoroughly enjoyable” (Deanna Raybourn, New York Times–bestselling author). The Earl of Wrexford possesses a brilliant scientific mind, but boredom and pride lead him to reckless behavior. So when pompous, pious Reverend Josiah Holworthy publicly condemns him for debauchery, Wrexford unsheathes his rapier-sharp wit and strikes back. As their war of words escalates, London’s most popular satirical cartoonist, A.J. Quill, skewers them both. But then the clergyman is found slain in a church—his face burned by chemicals, his throat slashed ear to ear—and Wrexford finds himself the chief suspect. An artist in her own right, Charlotte Sloane has secretly slipped into the persona of her late husband, using his nom de plume, A.J. Quill. When Wrexford discovers her true identity, she fears it will be her undoing. But he has a proposal—use her sources to unveil the clergyman’s clandestine involvement in questionable scientific practices, and unmask the real murderer. Soon Lord Wrexford and the mysterious Mrs. Sloane plunge into a dangerous shadow world hidden among London’s intellectual enclaves to trap a cunning adversary—before they fall victim to the next experiment in villainy . . . “Sharp, engaging characters, rich period detail, and a compellingly twisty plot, Andrea Penrose delivers a winner.” —Deanna Raybourn, New York Times–bestselling author “Fans of C.S. Harris take note! A riveting ride through Regency London, from the slums of St. Giles, to the mansions of Mayfair.” —Lauren Willig, New York Times–bestselling author “Historical chemistry meets alchemy . . . A delight of a book.&rdquo