The year is 1904. Twenty-three-year-old Jemima Pitt, the daughter of Thomas Pitt, head of Britain's Special Branch, is crossing the Atlantic. She is traveling with an acquaintance, Delphinia Cardew, who is to marry the aristocratic Brent Albright in a high-society New York wedding - a grand affair that will join together two fabulously wealthy families, titans of the international financial world. But Jemima senses a mysterious shadow darkening the occasion.

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.

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 the beautiful daughter of Sir Basil Moidore is stabbed to death in her bed, Inspector Monk and Nurse Latterly uncover a tale of shame and scandal that threatens to destroy a powerful London dynasty.

England, 1925. After years shut away from the world, former detective Lord Edgington of Cranley Hall plans a grand ball to celebrate his 75th birthday. But when someone starts bumping off members of his scheming family, the old man enlists his teenage grandson to help find the killer before one of them is next. The mismatched duo must pick the culprit from a gaggle of preening playboys, scatter-brained spinsters, and irate inspectors in this Agatha-Christie-style whodunnit that will have you racing to spot the killer. 

Kat brings Harry across the Atlantic to New York for a planned whirlwind time in her home town - complete with a lavish suite at the Plaza. But when Teddy Crowther - grandson of a wealthy City magnate - is snatched by the mob, the pair is asked to help. As Prohibition New York swelters in a heatwave, the Mortimers soon find themselves playing a dangerous game of cat and mouse, not just with the kidnappers, but also the rest of the Crowther family, all of whom have everything to gain - and maybe lose - if Teddy is found ...

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. For two of the guests are Americans, each vying to buy Alberton’s armaments. Soon Monk and Hester’s forebodings are fulfilled as one member of the party is brutally murdered and two others disappear - along with Alberton’s entire inventory of weapons.

On vacation from London on the beautiful Italian coast, 28-year-old Elena Standish and her older sister Margot have finally been able to forget some of the lasting trauma of the Great War. Touring with her camera in hand, Elena has found new inspiration in the striking Italian landscape, and she's met an equally striking man named Ian. Not ready to part from one another, she and Ian share a train trip home to England. But a shocking murder disrupts their agenda, forcing Elena to personally deliver a message to Berlin that could change the fate of Europe. 

It's winter in Cherringham, and petty thief Charlie Topper's life is in danger. Desperate, he reaches out to Jack and Sarah for help: last summer - during a robbery - he witnessed a cold-blooded murder, and now he fears the killer is after him. Can Jack and Sarah solve this very cold case - before the desperate murderer comes for them too? Set in the sleepy English village of Cherringham, the detective series brings together an unlikely sleuthing duo: English web designer Sarah and American ex-cop Jack.

Maisie Dobbs isn't just any young housemaid. Through her own natural intelligence - and the patronage of her benevolent employers - she works her way into college at Cambridge. After the War I and her service as a nurse, Maisie hangs out her shingle back at home: M. DOBBS, TRADE AND PERSONAL INVESTIGATIONS. But her very first assignment soon reveals a much deeper, darker web of secrets, which will force Maisie to revisit the horrors of the Great War and the love she left behind.

It's 1811, and the threat of revolution haunts the upper classes of King George III's England. Then a beautiful young woman is found savagely murdered on the altar steps of an ancient church near Westminster Abbey. A dueling pistol found at the scene and the damning testimony of a witness both point to one man - Sebastian St. Cyr, Viscount Devlin, a brilliant young nobleman shattered by his experience in the Napoleonic Wars.

Lady Emily Hardcastle is an eccentric widow with a secret past. Florence Armstrong, her maid and confidante, is an expert in martial arts. The year is 1908 and they've just moved from London to the country, hoping for a quiet life. But it is not long before Lady Hardcastle is forced out of her self-imposed retirement. There's a dead body in the woods, and the police are on the wrong scent. Lady Hardcastle makes some enquiries of her own, and it seems she knows a surprising amount about crime investigation...

Spring, 1918. The Great War is at a crucial stage, the Germans are making one last push into France, and the Allies are struggling to hold them back. Battle lines are shifting, and men, and their machines, are being sent up and down the front to shore up defenses. Major Heathcliff Lennox, and his batman Greggs, are told to report to their new HQ. They set off on a sunlit day to fly the distance, but the enemy is never far away, and disaster strikes. They're sent crashing to the ground behind enemy lines, where life, death, and love await.

Spring, 1921. Scotland Yard sends Inspector Ian Rutledge to the sea-battered village of Walmer on the coast of Essex, where amongst the salt flats and a military airfield lies Benton Abbey, a grand manor with a storied past. The lady of the house may prove his most bewildering witness yet. She claims she saw a violent murder - but there is no body, no blood. She also insists she recognized the killer: Captain Nelson. Only it could not have been Nelson because he died during the war.

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.