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

he murder of a shipping clerk . . . the strange disappearance of trusted friends . . . rumors of corruption within the powerful East India Company . . . all add up to a thrillingly dark mystery . . .

The fourth in a brilliant historical mystery series for fans of Deanna Raybourn, Tasha Alexander, and Amanda Quick A wealthy lord, who also happens to be a brilliant scientist, and a young widow who secretly pens satirical political cartoons, must team up to solve a shocking murder in regency London. The murder of a shipping clerk . . . the strange disappearance of trusted friends . . . rumors of corruption within the powerful East India Company . . . all add up to a dark mystery entangling Lady Charlotte Sloane and the Earl of Wrexford in 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. As they delve into the murky world of banking and international arbitrage, 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 disasters both economic and personal as they are forced into a dangerous match of wits in an attempt to beat the enemy at his own game.

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

In the newest mystery from the New York Times bestselling author of Sweet Tea Revenge, Indigo Tea Shop owner Theodosia Browning is about to learn the true meaning of terroir… Theodosia Browning has never considered herself a wine connoisseur—tea has always been her forte. But that doesn’t mean she’s going to pass up an invitation to a fancy wine-tasting party at the upscale Knighthall Winery, just outside of Charleston, South Carolina. But a sweet evening takes on a bitter aftertaste when a dead body is discovered in one of the wine barrels. The son of proprietor Jordan Knight has been murdered. Dissatisfied with the police investigation, Knight turns to Theo for help. She’s heard through the grapevine that there are both family and business problems at Knighthall. They say in vino veritas, but everyone at the winery seems to be lying through their teeth. Sorting through the guest list as well as family and staff, Theo has her pick of suspects. It may look like the killer has her over a barrel, but cracking tough cases is vintage Theodosia Browning.

In the year 1592, Sir Robert Carey, a handsome courtier, comes north to Carlisle to take up his new post as Deputy Warden of the West March. He has wangled his appointment to be nearer his true love, a married woman, and farther from the gimlet eyes of his creditors and the disapproving eye of his father (the Queen’s cousin—possibly her half-brother). And of course, he can use the money.... Sir Robert is quick to realize he won’t see a profit from the perks if he fails to keep the peace. Alas, he is quickly challenged by the murder of a local lad, the possible betrayal of a disappointed rival, the ire of the lady’s husband, and the question of the horses—the hundreds of horses being stolen from all over the neighborhood. It’s hard to say whether the greater danger lies without the city walls amidst the scheming Scots—or within, amidst the unruly English garrison. Rich in atmosphere and packed with vivid real and fictional characters, few novels are as well imagined or as much fun as this romp through roguish courtiers, rival gangs, rustling, treason, and high ambition.