A Wrexford & Sloane Mystery Series

When the murder of a scientific genius on the verge of a momentous discovery upsets the wedding of their dear friends, Wrexford and Charlotte must risk all they hold dear to deconstruct a sinister conspiracy in the latest installment of Andrea Penrose’s USA Today bestselling Wrexford & Sloane Mysteries.

Celebration is in the air at Wrexford and Charlotte’s country estate as they host the nuptials of their friends, Christopher Sheffield and Lady Cordelia Mansfield. But on the afternoon of the wedding, the festivities are interrupted when the local authorities arrive with news that a murdered man has been discovered at the bridge over King’s Crossing, his only identification an invitation to the wedding. Lady Cordelia is horrified when the victim is identified as Jasper Milton, her childhood friend and a brilliant engineer who is rumored to have discovered a revolutionary technological innovation in bridge design. That he had the invitation meant for her cousin Oliver, who never showed up for the wedding, stirs a number of unsettling questions.

Both men were involved in the Revolutions-Per-Minute Society, a scientific group dedicated to making radical improvements in the speed and cost of transportation throughout Britain. Is someone plotting to steal Milton’s designs? And why has her cousin disappeared?

Wrexford and Charlotte were looking forward to spending a peaceful interlude in the country, but when Lady Cordelia resolves to solve the mystery, they offer their help, along with that of the Weasels and their unconventional inner circle of friends. The investigation turns tangled and soon all of them are caught up in a treacherous web of greed, ambition, and dangerous secrets. And when the trail takes a shocking turn, Wrexford and Charlotte must decide what risks they are willing to take with their family to bring the villains to justice . . .

A perplexing murder in a renowned Oxford University library and a suspicious fire at a famous inventor’s London laboratory set Wrexford and Lady Charlotte on two separate investigations in this masterfully plotted, atmospheric Regency-set mystery from USA Today bestselling author Andrea Penrose.

“[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

Responding to an urgent plea from a troubled family friend, the Earl of Wrexford journeys to Oxford only to find the reclusive university librarian has been murdered, and a rare manuscript has gone missing. The only clue is that someone overheard an argument in which Wrexford’s name was mentioned.

At the same time, Charlotte—working under her pen name, A. J. Quill—must determine whether a laboratory fire was arson and if it’s connected to the race between competing consortiums to build a new type of ship—one powered by steam rather than sails—with the potential to revolutionize military power and world commerce. That the race involves new innovations in finance and entrepreneurship only raises the stakes—especially as their good friend, Kit Sheffield, may be an investor in one of the competitors.

As they delve deeper into the baffling clues, Wrexford and Charlotte begin to realize that things are not what they seem. An evil conspiracy is lurking in the shadows and threatens all they hold dear—unless they can tie the loose threads together before it’s too late . . .

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 . . .

A USA Today bestseller!

“[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

A thrilling new mystery novel from the acclaimed author of Murder at Queen’s Landing, perfect for fans of Deanna Raybourn and Anne Perry!


In the fifth installment of Andrea Penrose’s acclaimed, atmospheric mystery series, the upcoming marriage of the Earl of Wrexford and Lady Charlotte Sloane promises to be a highlight of the season, if they can first untangle—and survive—a web of intrigue and murder involving the most brilliant scientific minds in Regency London…

One advantage of being caught up in a whirl of dress fittings and decisions about flower arrangements and breakfast menus is that Charlotte Sloane has little time for any pre-wedding qualms. Her love for Wrexford isn’t in question. But will being a wife—and a Countess—make it difficult for her to maintain her independence—not to mention, her secret identity as famed satirical artist A.J. Quill?
 
Despite those concerns, there are soon even more urgent matters to attend to during Charlotte and Wrexford’s first public outing as an engaged couple. At a symposium at the Royal Botanic Gardens, a visiting botanist suffers a fatal collapse. The traces of white powder near his mouth reveal the dark truth—he was murdered. Drawn into the investigation, Charlotte and the Earl learn of the victim’s involvement in a momentous medical discovery. With fame and immense fortune at stake, there’s no shortage of suspects, including some whose ruthlessness is already known. But neither Charlotte nor her husband-to-be can realize how close the danger is about to get—or to what lengths this villain is prepared to go . . .

A wealthy lord (who also happens to be a brilliant scientist) and a young widow (who secretly pens satirical political cartoons) in Regency London team up to chase down rumors of corruption within the powerful East India Company and the mysterious disappearance of friends in Andrea Penrose’s fourth Wrexford & Sloane Mystery—perfect for fans of Deanna Raybourn, Tasha Alexander, and Amanda Quick.

The many strands of a dark mystery entangle Lady Charlotte Sloane and the Earl of Wrexford in a dangerous web of secrets and lies that will call into question how much they really know about the people they hold dear–and about each other…

When Lady Cordelia, a brilliant mathematician, and her brother, Lord Woodbridge, disappear from London, rumors swirl concerning fraudulent bank loans and a secret consortium engaged in an illicit–and highly profitable–trading scheme that threatens the entire British economy. The incriminating evidence mounts, but for Charlotte and Wrexford, it’s a question of loyalty and friendship. And so they begin a new investigation to clear the siblings’ names, uncover their whereabouts, and unravel the truth behind the whispers.

Charlotte and Wrexford also struggle to navigate their increasingly complex feelings for each other. But the clock is ticking–a cunning mastermind has emerged…along with some unexpected allies–and Charlotte and Wrexford must race to prevent myriad disasters as they are forced into a dangerous game of wits in an attempt to beat the enemy at his own game.

Wrexford and Sloane must unravel secrets within secrets—including a few that entangle their own hearts—when they reunite to solve a string of shocking murders that have horrified Regency London . . .
 
Though Charlotte Sloane’s secret identity as the controversial cartoonist A.J. Quill is safe with the Earl of Wrexford, she’s ill prepared for the rippling effects sharing the truth about her background has cast over their relationship. She thought a bit of space might improve the situation. But when her cousin is murdered and his twin brother is accused of the gruesome crime, Charlotte immediately turns to Wrexford for help in proving the young man’s innocence. Though she finds the brooding scientist just as enigmatic and intense as ever, their partnership is now marked by an unfamiliar tension that seems to complicate every encounter.
 
Despite this newfound complexity, Wrexford and Charlotte are determined to track down the real killer. Their investigation leads them on a dangerous chase through Mayfair’s glittering ballrooms and opulent drawing rooms, where gossip and rumors swirl to confuse the facts. The more Charlotte and Wrexford try to unknot the truth, the more tangled it becomes. But they must solve the case soon, before the killer’s madness seizes another victim . . .
 
Praise for the Wrexford & Sloane Historical Mysteries
 
“Penrose deftly combines a Regency romance with a tricky mystery that delves into social unrest and the darker side of this storied period.”
—Kirkus Reviews
 
“Its complex story line and authentic historical details bring the early days of the Industrial Revolution vividly to life. Bound to fascinate readers of C.S. Harris and even fans of Victorian mysteries.”
—Library Journal, Starred Review

Nothing is as it seems in Regency London, especially when the Earl of Wrexford and Charlotte Sloane join forces to solve a shocking murder.
 
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 investigation when the inventor’s widow begs for his assistance. 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.
 
Joining Wrexford in his investigation is Charlotte Sloane, who uses the pseudonym A. J. Quill to publish her scathing political cartoons. She doesn’t mind tapping her extensive network of informants critical to her work to track down an elusive killer. With danger lurking at every turn, the potent combination of Wrexford’s analytical mind and Sloane’s exacting intuition begins to unravel the twisted motivations behind the inventor’s death. But they are up against a killer ready to strike again before they can recover the inventor’s priceless designs . . .
 
“Penrose deftly combines a Regency romance with a tricky mystery that delves into social unrest and the darker side of this storied period.”
—Kirkus Reviews
 
“Its complex story line and authentic historical details bring the early days of the Industrial Revolution vividly to life. Bound to fascinate readers of C.S. Harris and even fans of Victorian mysteries.”
—Library Journal, Starred Review

In Regency London, an unconventional scientist and a fearless female artist form an unlikely alliance to expose a cold-hearted killer . . .
 
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 . . .
 
“Thoroughly enjoyable . . . with 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.”
—Joanna Bourne, award-winning author