A snowbound country mansion, a missing butler, and a Christmas case...Olive and Jasper have never been closer - except for one thing. Jasper is still reticent about his frequent disappearances from polite society. With the holidays approaching and no paying client on the books, Olive decides to shadow Jasper when he’s unexpectedly called away. Her search brings her to Holly Hill Lodge where an eclectic group has gathered to celebrate an old-fashioned English Christmas. When the butler goes missing, Olive and Jasper must work together to solve the Christmas crime.

November, 1923. An invitation to a house party at the estate of Parkview Hall is a welcome respite for Olive Belgrave, a newly minted working girl who's become the solver of high society's trickiest problems. But when the sumptuous black tie event turns deadly, Olive's cousin Peter becomes the main suspect. Olive must unmask a sophisticated killer before an innocent man takes the blame...because murder doesn't RSVP.

Discreet sleuth for the high society set Olive Belgrave is delighted with her new flat at South Regent Mansions, where she’s made several friends, including the modern career woman, Minerva, who draws a popular cartoon about a flapper for a London newspaper. But then Minerva comes to Olive for help after catching a glimpse of a disturbing sight - a dead body. At least, that’s what Minerva thought she saw, but there’s not a dead body anywhere in the posh building, and the residents are continuing with their lives as they normally do. Is Minerva seeing things?

September, 1923. Despite closing her first case, high society lady detective Olive Belgrave hasn’t found a new client. She’s taken a job as a hat model to pay for her poky boarding house room. But then a job offer comes her way: make discreet inquires about a famous author who’s disappeared. Olive travels to the English countryside to hunt for him.

October, 1923. Lady detective Olive Belgrave has a new case. Lady Agnes doesn’t believe in curses - especially ancient curses - and she hires Olive to prove her uncle wasn’t the victim of a malevolent mummy. Olive investigates and discovers the truth is much worse - it’s murder. Can Olive debunk the curse and reveal the true culprit before the mummy curse claims another victim?

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. 

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. 

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.

Georgie's best friend, Belinda, inherits a spooky old house in Cornwall and asks Georgie to go with her to inspect the property. When they arrive, they meet Rose, a woman Belinda knew as a child when she spent her summers with her grandmother in Cornwall. Belinda never liked Rose, who has always been bossy and a bit of a bully, but when Belinda's house proves to be uninhabitable, Rose invites them to stay with her. Rose is now married to Tony Summers, Belinda's childhood crush, and lives in the lovely house on the cliffs that he has inherited.

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. 

England, 1920. Eleanor Swift has spent the last few years travelling the world: taking tea in China, tasting alligators in Peru, escaping bandits in Persia and she has just arrived in England after a chaotic 45-day flight from South Africa. Chipstone is about the sleepiest town you could have the misfortune to meet. But then, from the edge of a quarry, through the driving rain, Eleanor is shocked to see a man shot and killed in the distance. Before she can climb down to the spot, the villain is gone and the body has vanished.

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. 

Winter, 1920. Amateur sleuth Lady Eleanor Swift is feeling festive. She is playing host to the entire village at Henley Hall. She’s also purchased perfect presents for each of her household - not forgetting the biggest bone in the butcher’s shop for her partner in crime, Gladstone the bulldog - and is looking forward to celebrating her first English country Christmas. As snowflakes fall, Eleanor is cheering on contestants in the traditional Christmas fun run in the grounds of the hall. But tragedy strikes when one of the runners drops dead at the finish line.

Autumn, 1921. Lady Eleanor Swift is invited to her old school, St Mary’s, as a guest speaker. Her favorite teacher, Mrs. Wadsworth, has asked that Eleanor talk about her intrepid travels around the globe - travelling the Silk Road by bicycle, crossing the Himalayas and even befriending the Maharaja of India. But in the circumstances, perhaps it would have been a good idea to talk about her career as a daring detective. Because no sooner has Eleanor brushed up on her times tables than she is greeted by terrible news: Mrs. Wadsworth has been murdered.

Autumn, 1920. Lady Eleanor Swift, accidental amateur detective and retired explorer, is determined to take a break from investigating murders. So when a local politician dies suddenly at an elegant dinner party at Farrington Manor, she tries her hardest not to listen to the raft of rumors around the village that he might have been poisoned by the fudge. It’s the anniversary of the disappearance of her beloved parents, and she’s promised herself not to get mixed up with any more mysteries. She isn’t sure they’d have approved.