Having long abandoned any hope of making a match, 26-year-old Beatrice Hyde Clare finds herself a little overwhelmed by her engagement to the Duke of Kesgrave. Cloying society matrons clamor for her attention while her aunt reels off an endless list of servants she will have to oversee. Even the most intrepid female would quake at the prospect of managing eight footmen! Fortunately, Bea knows the perfect distraction - an intriguing mystery - and pays a call on the Countess of Abercrombie, who had promised her that very thing only the evening before.    

Having solved the two murders that somehow fell in her path, Beatrice Hyde-Clare is on the lookout for a third. Through a absurd quirk of stupid fate, the shy spinster has fallen in love with the thoroughly unattainable Duke of Kesgrave and is desperate for something, anything, to occupy her mind. A dead body would do nicely.

As much as Beatrice Hyde-Clare relished the challenge of figuring out who murdered a fellow guest during a house party in the Lake District, she certainly does not consider herself an amateur investigator. So when a London dandy falls dead at her feet in the entryway of a London Daily Gazette, she feels no compulsion to investigate. It was a newspaper office, after all, and reporters are already on the case as are the authorities.

The former Beatrice Hyde-Clare is having a little trouble adjusting to her new situation. Now installed as the duchess of Kesgrave in elegant splendor in Berkeley Square, she is confounded by the stately residence’s seemingly endless array of rooms. And every time one of the maids addresses her as "your grace", she flinches.

Finally, Flora Hyde-Clare has wrest the narrative from Beatrice by finding her own compelling murder mystery to solve. Well, it’s not entirely her own because the victim is her cousin’s former beau Mr. Theodore Davies, whose father cruelly separated the young lovers (though not so cruelly, for it left the door open for Bea to woo the duke of Kesgrave).

Twenty-six-year-old Beatrice Hyde-Clare is far too shy to investigate the suspicious death of a fellow guest in the Lake District. A spinster who lives on the sufferance of her relatives, she would certainly not presume to search the rooms of her host's son and his friend looking for evidence. Reared in the twin virtues of deference and docility, she would absolutely never think to question the imperious Duke of Kesgrave about anything, let alone how he chose to represent the incident to the local constable. And yet that's exactly what she does.

Despite suffering a few initial setbacks, the former Beatrice Hyde-Clare has settled into her new position nicely. Thanks to Lady Abercrombie’s machinations, she has secured the admiration of society and finally earned the respect of her staff. Even the lessons in defending herself, which her husband, the Duke of Kesgrave, insists she take if she wants to continue in her dangerous avocation, are going well. But then she learns from a most unlikely source that Kesgrave’s malevolent uncle is scheming to destroy her happiness.

Onetime adventurer and now amateur sleuth Lady Eleanor Swift is attending the annual royal regatta with her new pal Tipsy Fitzroy. Tipsy has Eleanor trussed up like a debutante in a new dress, determined to turn her into a proper society lady. Even Eleanor’s favorite companion, Gladstone the bulldog, has a new outfit for the occasion. But the sparkling prize-giving ceremony is interrupted when the devilishly handsome host gulps his glass of champagne on stage and collapses to the floor. The victim is none other than the king’s cousin, Lord Xander Taylor-Howard.

Kitty Underhay is looking forward to a week of long lunches and wedding planning with her husband-to-be, Captain Matthew Bryant. But the plan is derailed when he is called on to collect a former comrade-in-arms, arriving on the 15:50 from Paddington. As the train bearing Simon Travers pulls up to the platform, a piercing scream rises over the screech of its brakes. Travers is dead in his seat, a dagger in his heart. Only a few individuals had access to Travers’s compartment, and Kitty must find out which of these seemingly benign passengers is, in fact, a cross-country killer.

Winter, 1933. Kitty Underhay is enjoying a restorative break from sleuthing on a visit to her family at Enderley Hall. The only thing marring her peace - aside from the uncomfortable sensation she has of being watched - is the obvious history between her beau, ex-army captain Matthew Bryant and another guest, the beautiful Juliet Vanderstafen. So, when the parish clerk is found dead on her front doorstep, Kitty leaps at the chance of distraction. 

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.

November 1933. Amateur sleuth-cum-dutiful granddaughter Kitty Underhay stifles a sigh of boredom as she attends the annual Hoteliers' Association Dinner and Dance on behalf of her grandmother, the proprietress of the Dolphin Hotel. She hopes the company of ex-army captain Matthew Bryant will enliven the otherwise dull evening. That is, until bullish and overbearing local councilor Harold Everton drops dead into his bowl of consommé. 

Winter, 1921. Lady Eleanor Swift, amateur sleuth and reluctant lady of the manor, has been invited to spend Christmas in Scotland, at the beautiful castle of her dear friends Baron and Baroness Ashley. Even her favourite companion, master of mischief Gladstone the bulldog, is coming along to share a slice of turkey. As snow begins to fall outside, the rather mismatched group are cozy by the roaring fire, sharing a tipple over a plate of Mrs. Trotman’s famous mince pies.

Late summer 1933. After a quarrel with too-plucky-for-her-own-good amateur sleuth Kitty Underhay, dashing ex-army captain Matthew Bryant is nursing his wounds, and a tumbler of brandy, when there’s a heavy knock at the door and he finds himself arrested for murder. The body of aspiring actress Pearl Bright has been found, strangled with one of Matt’s own bootlaces, and the evidence seems to be stacked against him. The local constabulary might have locked Matt up, but before they can throw away the key, Kitty hears the news and hies to his aid, determined to prove his innocence. 

Summer 1933. Fresh from the discovery that she has family living nearby, Kitty Underhay has packed her carpet bag, commandeered a chambermaid and set off on a visit to stately Enderley Hall. She’s looking forward to getting to know her relatives, as well as the assembled group of house guests. But when elderly Nanny Thoms is found dead at the bottom of the stairs after papers of national importance are stolen, Kitty quickly learns that Muffy the dog’s muddy paws on her hemline are the least of her problems.