Bethan Griffiths has returned home for Christmas to unwrap secrets. It's the 1970s and she is back in the village of Foel in the Welsh hills to raise her daughter. They arrive to the open arms of her family and the community, but not all is what it seems, and Beth isn't home for the reason she pretends, either. Vicious notes start appearing that reveal harsh truths about the village inhabitants, stirring up ancient pasts, old loves, and the dead. Not even local dignitary, the elegant and aloof Lady Melling who hides in her manor house, is safe from the accusations.

West Yorkshire, 1926. After completing her training in Steeple Street, Agnes is looking forward to making her mark as the village's first district nurse, confident she can make a difference in the locals' lives. But when she arrives, she's treated with suspicion, labelled just another servant of the wealthy mine owners. The locals would much rather place their trust in the resident healer, Nella Black.

Northumberland, 1809: A beautiful young heiress disappears from her locked bedchamber at Linn Hagh. The local constables are baffled and the townsfolk cry "witchcraft". The heiress' uncle summons help from Detective Lavender and his assistant, Constable Woods, who face one of their most challenging cases.

In the summer of 1916, Private Daniel Baker marches into battle with the boys of Nova Scotia's 25th Battalion. Out of brutal necessity, Danny has steeled himself against the trials and horrors of war, but he is completely unprepared to meet the love of his life in war-torn France. Audrey Poulin has the soul of an artist. She lives alone with her grandmother in the quiet French countryside, where her only joy is in her brush and palette. When by chance she encounters Danny, the handsome young soldier captures her heart and inspires her painting.

January 1950. Lady Anne Coke, daughter of the fifth earl of Leicester, is in Scunthorpe on a business trip when she is called home after a sudden death in the family. She returns to Holkham Hall to discover a mystery: her beloved grandfather has been found dead at the bottom of a flight of stairs with a valuable piece of jewellery in his pocket. No one can find a cause of death, and some even suspect foul play from the ghost who supposedly haunts the house. But Anne's suspicions are aroused.

It's 1895, and after the suicide of her mother, 16-year-old Gemma Doyle is shipped off from the life she knows in India to Spence, a proper boarding school in England. Lonely, guilt-ridden, and prone to visions of the future that have an uncomfortable habit of coming true, Gemma's reception there is a chilly one.

Born on the ninth day of the ninth month in the year 1900, Kitty Deverill grows up in Castle Deverill, on the sunning green hills of West Cork, Ireland - the same place her ancestors have always dwelt. She isn't fully Irish, as the son of the local veterinarian likes to tease her; but this doesn't stop Kitty and Jack O'Leary from falling in love....

On a June morning in 1900, Rosie Killeen crosses the road that divides her family's County Mayo farm from the estate of Lord and Lady Ennis, and makes her way to the "big house" for the first time. Barely eight years old, Rosie joins the throng of servants preparing for the arrival of Queen Victoria. But while the royal visit is a coup for Ennismore, a chance meeting on the grounds proves even more momentous for Rosie.

Henrietta Howel can burst into flames. Forced to reveal her power to save a friend, she's shocked when, instead of being executed, she's invited to train as one of Her Majesty's royal sorcerers. Thrust into the glamour of Victorian London, Henrietta is declared the chosen one, the girl who will defeat the Ancients, bloodthirsty demons terrorizing humanity. She also meets her fellow sorcerer trainees.

Bath, 1821: Rachel Crofton escapes her unhappy employment as a governess by marrying a self-made businessman. But her new life soon takes an unexpected turn. Reclusive Jonathan Alleyn is a man tormented by the disappearance of his childhood sweetheart, Alice. Starling, foundling child and now servant, is convinced that Alice, the woman she loved as a sister, was stolen from her. Did Alice run away? Or did something altogether more sinister occur? As Starling tries to expose the lies behind Bath's immaculate facades, others want only to forget, and will go to extreme lengths to do so.

Florrie Buckley is an orphan living on the wind-blasted moors of Cornwall. It's a hard existence, but Florrie is content; she runs wild in the mysterious landscape. She thinks her destiny is set in stone. But when Florrie is 14, she inherits a never-imagined secret. She is related to a wealthy and notorious London family: the Graces.

1937. Katya Komarovsky is studying medicine in Glasgow, living among friends and eager to begin her career as a doctor. But when her spendthrift parents announce that they’ve run out of money and are facing ruin—and that she’ll now have to support them by working as a governess in Vienna—the life she’s dreamed of goes up in smoke. Furiously resentful, Katya rages at her wealthy employer, Thor, for stealing her future—and saddling her with twelve-year-old Gretchen, a deeply troubled child who has only a blazing musical talent to redeem her.

Welcome to the district nurses' home on Steeple Street, where everyone has a secret.... Ambitious young nurse Agnes Sheridan had a promising future ahead of her until a tragic mistake cost her the love and respect of everyone around her. Now she has come to Leeds for a fresh start as a trainee district nurse. But Agnes finds herself facing unexpected challenges as she is assigned to Quarry Hill, one of the city's most notorious slums.

Lady of the house Octavia Cavendish lives like a bird in a gilded cage. With her family’s fortune, her husband, William, has made significant additions to the estate, but he too feels bound - by the obligations of his title as well as his vows. Their son, Harry, is expected to follow in his footsteps, but the boy has dreams of his own, like pursuing the new adventure of aerial flight. Meanwhile, below stairs, a housemaid named Emily holds a secret that could undo the Cavendish name.

Ellen Trawton is running away from it all. She hates her job, she doesn't love the aristocratic man to whom she is engaged, and her relationship with her controlling mother is becoming increasingly strained. So Ellen leaves London, fleeing to her aunt's cottage in Connemara. Cutting ties with London society, Ellen gives in to Ireland's charm and warmth, thinking her future may lie where so much of her past has been hidden.