It's Christmas and the well-born guests who have gathered at Applecross for a delicious weekend of relaxation are warmed by roaring fires, mistletoe, and gorgeously wrapped gifts. It's scarcely the setting for misfortune, and no one - not even that clever young aristocrat and budding sleuth Vespasia Cumming-Gould - anticipates the tragedy that is to darken this light-hearted holiday house party. But soon one young woman lies dead, a suicide, and Vespasia must uncover the heartbreaking truth behind the tragedy.

Scuff has come a long way from his time as a penniless orphan scraping together a living on the banks of the Thames. Now he's studying medicine at a free clinic run by Dr. Crowe. Lately Crowe has grown distracted after witnessing an altercation between a former patient of his named Ellie—a woman he not only treated but grew to love—and her controlling fiancé. It seems someone is forcing Ellie to marry the man, and as Crowe's emotions come flooding back, he sets out to uncover the troubling connection between Ellie, her father, and her betrothed.

Mariah Ellison, Charlotte Pitt's grandmother, accepts her longtime friend Winnie's gracious invitation to spend Christmas with her and her husband, Barton, in their picturesque village. But upon arrival, Mariah discovers that Winnie has vanished without a trace, and Barton rudely rescinds the invitation. Once Mariah finds another acquaintance to stay with during the holiday season, she begins investigating Winnie's disappearance.

It's 1910, and Daniel Pitt is a reluctant lawyer who would prefer to follow in the footsteps of his detective father. When the biographer Russell Graves, who Daniel is helping defend, is sentenced to execution for the murder of his wife, Daniel's Pitt-family investigative instincts kick in, and he sets out to find the real killer. With only 21 days before Graves is to be executed, Daniel learns that Graves is writing a biography of Victor Narraway, the former head of Special Branch and a close friend of the Pitts. And the stories don't shed a positive light. Is it possible someone is framing Graves to keep him from writing the biography-maybe even someone Daniel knows in Special Branch? The only answer, it seems, lies in the dead woman's corpse.

When a maid in the upper class Ellison household is strangled, Inspector Pitt is called in to investigate. He finds a world ruled by strict manners and social customs, where the inhabitants of the Ellison's neighborhood appear to be more outraged by the thought of scandal than they are by murder. Inspector Pitt finds a most unlikely ally in Charlotte, the Ellison's spirited daughter. But as the murders continue, Charlotte and Pitt find themselves drawn together by more than the investigation.

His name, they tell him, is William Monk, and he is a London police detective. But the accident that felled him has left him with only half a life; his memory and his entire past have vanished. As he tries to hide the truth, Monk returns to work and is assigned to investigate the brutal murder of a Crimean War hero and man about town. Which makes Monk’s efforts doubly difficult, since he’s forgotten his professional skills along with everything else.

The year is 1861. The American Civil War has just begun, and London arms dealer Daniel Alberton is becoming a very wealthy man. His quiet dinner party seems remote indeed from the passions rending America. Yet investigator William Monk and his bride, Hester, sense growing tensions and barely concealed violence.

Throughout the annals of fiction, there have been many celebrated detective teams: Sherlock Holmes and John Watson. Nick and Nora Charles. Hercule Poirot and Arthur Hastings. Thomas and Charlotte Pitt. That last pair is the creation of beloved mystery writer Anne Perry, who, as the editor of Odd Partners and in conjunction with Mystery Writers of America, has enlisted some of today’s best mystery writers to craft all-new stories about unlikely duos who join forces - sometimes unwillingly - to solve beguiling whodunits.

At the end of her first unsuccessful season out in society, Lady Georgiana has all but given up on attracting a suitable man - until she receives an invitation to a masked Halloween ball at Broxley Manor. Georgie is uncertain why she was invited, until she learns that the royal family intends to marry her off to a foreign prince, one reputed to be mad.

Miss Busby helped Major Heathcliff Lennox solve a series of murders at Bloxford in the Cotswolds. Now, she finds herself drawn into a new murder, but this time, it's just her, and she must rely on her sharp mind and sharper wits to catch a Cotswolds killer, along with a handsome police inspector and a reporter who's keen to make her mark.

The Earl of Wrexford possesses a brilliant scientific mind, but boredom and pride lead him to reckless behavior. He does not suffer fools gladly. 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.

June 1933. Independent, young Kitty Underhay has been left in charge of her family’s hotel, The Dolphin, on the tranquil English coast. But when several rooms are broken into and searched, including Kitty’s own, she quickly realizes that something out of the ordinary is afoot at the hotel. Soon, rumors are flying in the cozy town that someone is on the hunt for a stolen ruby. A ruby that Kitty’s mother may well have possessed when she herself went missing during the Great War.

The year is 1920: Flying in the face of convention, legendary American adventuress Beryl Helliwell never fails to surprise and shock. The last thing her adoring public would expect is that she craves some peace and quiet. The humdrum hamlet of Walmsley Parva in the English countryside seems just the ticket. And, honestly, until America comes to its senses and repeals Prohibition, Beryl has no intention of returning stateside and subjecting herself to bathtub gin.

A reluctant ex-spy with demons of her own, Elinor finds herself facing down one of the most dangerous organized crime gangs in London, ultimately exposing corruption from Scotland Yard to the highest levels of government. The private, quiet “Miss White" as Elinor is known, lives in a village in rural Kent, England, and to her fellow villagers seems something of an enigma. Well she might, as Elinor occupies a "grace and favor" property, a rare privilege offered to faithful servants of the Crown for services to the nation.

The daughter of a distinguished soldier, Bess Crawford follows in his patriotic footsteps, volunteering to serve her country as a nurse during the Great War. In 1916 she promises Lieutenant Arthur Graham that she will carry his dying request to a brother. When Bess arrives at the Graham house in Kent, Jonathan Graham listens to his brother's last wishes with surprising indifference.