Posie Parker has been called to her most baffling case yet. Amyas Lyle, London’s top young lawyer, has been found with his head in a box of poisoned saltwater. It’s the perfect murder. But who hated him enough to do such a thing? Following a trail of strange notes, all of which speak of the sea and saltwater, Posie travels from London to the seaside resort of Whitley Bay, looking for answers. But nothing can prepare her for what she finds there.

Silvia Hanro, the famously beautiful movie star, has received death threats alongside her morning coffee, and Posie is tasked with protecting her. Aided by her good friends Lady Dolly Cardigeon and Chief Inspector Richard Lovelace, Posie soon realises that behind the cheap canvas sets and the dreamy glamour of the Studios a dreadful secret lays buried, and traitors lurk everywhere.

Posie Parker once failed a client. And now that client is dead. Elsie Moncreiff, a housekeeper, has fallen from the White Cliffs of England in a howling storm. But the question is, was it bad luck, or was it murder?Armed with just her guilty conscience and a less-than-helpful Sergeant Rainbird for company, Posie vows to get to the bottom of things. But what she finds is not at all what she was expecting.

Cambridge. Christmas 1922. Posie Parker has cleared a space in her hectic schedule to try to unravel a tragedy in her own family. But Posie’s past is hiding around every turn in the old university town. She finds herself taking on a new case which is positively teeming with ghosts, shadows, and secrets, where nothing is quite what it seems.

March, 1925. Pregnant, bored, and longing for an adventure, Posie Parker accepts a rather last-minute wedding invitation from an old friend who is getting married out in the gorgeous town of San Gimignano, Tuscany. But what Posie - and her husband Richard Lovelace - arrive into is not a blissfully happy wedding party, at all. It’s a chaotic mix of mistrust, unfaithful fiancées, bizarre death threats, uninvited wedding guests, and a big dollop of very real unease.

Posie Parker has been summoned to Chelsea, to the House of Sinne, the fashionable London perfume house. Anouk Sinne, the most brilliant perfumier of her age, has been receiving blackmail demands, and asks Posie to investigate. But is blackmail just the tip of the iceberg? A launch party for the House of Sinne’s highly anticipated new fragrance is just about to take place, and Posie finds herself rubbing shoulders with some very famous people, but after the "reveal" of the strangest perfume Posie has ever experienced, things take a chilling turn for the worse…

When famous explorer Alaric Boynton-Dale disappears, Posie uncovers many dark secrets: an aristocratic family torn apart by hatred, a bizarre murder at an English country house, and a cryptic clue left behind by Alaric which is sweet as honey, but deadlier than poison. In an action-packed case where simply everyone has a motive for wanting Alaric dead, Posie's investigation starts off in the English Cotswolds, takes her through the glamorous South of France, on to the mysterious island of Ortigia in Italy, and then into the Tombs of the Pharaohs in Egypt.

December, 1925. A dark, smog-filled London doesn’t seem very Christmassy or exciting, but then Posie Parker, London’s premier female private detective, receives an urgent call from one of her oldest friends: Rufus, Earl of Cardigeon. Summoned to The Mermaid, an ancient hotel in Rye on the Sussex Coast, in the heart of smuggling country, Posie, together with her husband Richard, finds her friend in a real state. As the snow falls and Christmas lights go up, secrets are revealed, and Posie becomes involved in perhaps her most personal case so far.

Kitty Underhay is accompanying her fiancé, Matthew Bryant, and Bertie, his new cocker spaniel, on an outing to Torbay Country Club. However, the delightful day soon turns to disaster. Walking Bertie in the shaded grotto after an exhilarating archery demonstration, Kitty makes an unsporting discovery: the body of their host, Sir William Winspear, with an arrow in his back.

Summer 1923. Lady Eleanor Swift is finally persuaded by her butler, Clifford, to take a villa in the south of France for the season. She plans to do what a glamorous lady abroad should: long lunches on the balcony followed by lazy afternoons lounging by the pool. But when Clifford examines the wine cellar, he discovers there are no decent reds, but there is a very dead body. The victim is famous American movie-star Rex Armstrong. Poor Rex seems to have been stabbed with a sword from the film set. So how did he end up in Eleanor’s villa?

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.

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.

The year 1934. Kitty Underhay steps out of the battered Rolls Royce and onto the graveled driveway of Thurscomb Castle in deepest Yorkshire. She’s honored to be a bridesmaid at her cousin Lucy’s wedding to the reluctant Lord Rupert Woodcomb, but as family and friends gather for welcome drinks, Kitty dodges intrusive questions about her own marital status by taking a stroll about the castle grounds. As she passes through the manicured gardens, a fatal shot rings out....

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.