The Upper Crust

Tasha Alexander
Widowed Emily Ashton uses her new-found freedom to pursue research in Classical antiquities in the British Museum, where she uncovers a dangerous secret involving stolen artifacts. (from eSequels)
Simon Brett
It's that glorious period between the two world wars, and the exiled king of Mitteleuropa is visiting the ancestral home of the Duke of Tawcester. When the ex-king's daughter is kidnapped, noblesse obliges the Duke's handsome, brave, and rather stupid son (known to all as Blotto) to drive off to the rescue. Luckily, he's aided by his brilliant sister, Twinks. Plus, he's got a really swell car. (summary)
Stella Gibson
When the orphaned Flora Poste descends on her relatives...she finds nothing but chaos. Judith is in grief, Amos has been called by God, Seth is smoldering with sensuality, and Great Aunt Ada Doom witnesses something nasty in the woodshed. (from summary)
Simon Brett
The seemingly fatuous and effete Campion emerges as a natural leader when sinister forces imprison the weekend guests following a murder at Black Dudley Mansion. (from eSequels)
Carola Dunn
The Honorable Daisy Dalrymple...has shocked her aristocratic family by becoming a magazine writer. Daisy's on-site research at Wentwater Court is interrupted when (a guest) has a fatal skating accident. (from eSequels)
Rhys Bowen
Georgina Rannoch (34th in line to the throne) feels called upon to clear up her family name when an arrogant Frenchman, who wants her family's estate for himself, winds up dead. (from eSequels)
Mitford, Nancy
British aristocracy in the 20’s and 30’s through the (satirical) adventures of the Radletts, an exuberantly unconventional family. (from summary)
Helen Simonson
Maj. Ernest Pettigrew has settled into a genteel life of quiet retirement in his beloved village of Edgecombe St. Mary. Refined, gentlemanly, unwaveringly proper in his sense of right vs. wrong, and bemused by most things modern, he has little interest in cavalier relationship mores, the Internet, and crass developments and is gently smitten by the widowed Mrs. Ali, the lovely Pakistani owner of the local shop where he buys his tea. (from Library Journal)
P. G. Wodehouse
Who can forget the beloved gentleman's personal gentleman, Jeeves, who always comes to the rescue each time the hapless Bertie Wooster falls into trouble? (description)
Peter Carey
Olivier-Jean-Baptiste de Clarel de Garmont is French nobility, son of survivors of the French Revolution. Olivier has had every privilege and is acutely aware of his relative social position. Imagine his surprise and discomfort when he is banished, for his own safety, to newly emerging democratic America. (from Library Journal)
Kazuo Ishiguro
A tragic, spiritual portrait of a perfect English butler and his reaction to his fading insular world in post-war England. (from summary)
Deanna Raybourn
1886. Private investigator Nicholas Brisbane persuades the recently widowed Lady Julia Grey that her husband's death may not have been due to hereditary heart problems, when he produces a threatening message addressed to the late Sir Edward Grey. (from eSequels)
Marion Chesney
Captain Harry Cartwright, who finds that he can make an income for himself through "fixing things" for rich clients, runs afoul of spoiled suffragette Rose Summer during a murder investigation at Lord Hedley's manor. (from eSequels)
Alan Bradley
When Flavia stumbles over a dying stranger lying in the garden, she hears him whispers the word "Vale," and then die. Her father's peculiar behavior leads her to suspect that he might have killed the man. (from eSequels)
Georgette Heyer
The Duke of Avon takes a Paris guttersnipe for a page--but Leon turns out to be a girl, the disinherited daughter of a French count. (from eSequels)
Evelyn Waugh
Set in England between the wars, the novel examines the frenetic but empty lives of the Bright Young Things. (from summary)
Dorothy Sayers
In his first appearance, Lord Peter Wimsey conducts an unofficial inquiry into a strange case involving a nude corpse found in a bathtub. (from eSequels)