Hidden in the depths of eighteenth-century London, a secret apothecary shop caters to an unusual kind of clientele. Women across the city whisper of a mysterious figure named Nella who sells well-disguised poisons to use against the oppressive men in their lives. But the apothecary’s fate is jeopardized when her newest patron, a precocious 12-year-old, makes a fatal mistake, sparking a string of consequences that echo through the centuries.

August 1939: London is dismal under the weight of impending war with Germany as Hitler’s forces continue to sweep across Europe. Into this uncertain maelstrom steps Grace Bennett, young and ready for a fresh start in the bustling city streets she’s always dreamed of - and miles away from her troubled past in the countryside. With aspirations of working at a department store, Grace never imagined she’d wind up employed at Primrose Hill, an offbeat bookshop nestled in the heart of the city - after all, she’s never been much of a reader.

Astraia Holmes, sister of Sherlock, is baffled by a series of bizarre and brutal murders committed by a dragon-like assailant, and desperately wishing to impress her brother and solve the crimes, she teams up with a mysterious and brilliant young woman Madeleine Barquist. Sherlock suspects an ancient malevolence at work, and he fears for Astraia's safety. The signs point to a Chinese dragon god cult known as the Ya Zi, a warrior society originally formed 2,000 years ago to assassinate enemies of the emperor.

Would you risk your life to save just one person? An incredible story of love, hope, and friendship; and a testament to humanity and courage in history’s darkest days. 1941, Nazi-occupied Amsterdam. Professor Josef Held has never recovered from the loss of his beloved wife - and has no intention of ever letting anyone new into his quiet, safe world. But then the Nazis come for the Jews - and Mrs Epstein is killed. And Josef, in an impulsive act of courage, offers his student Michael Blum a place to hide.

The orphaned Elsie Camden learned as a girl that there were two kinds of wizards in the world: those who pay for the power to cast spells and those, like her, born with the ability to break them. But as an unlicensed magic user, her gift is a crime. Commissioned by an underground group known as the Cowls, Elsie uses her spellbreaking to push back against the aristocrats and help the common man. Elite magic user Bacchus Kelsey is one elusive spell away from his mastership when he catches Elsie breaking an enchantment. To protect her secret, Elsie strikes a bargain.

New York City, 1899. Tillie Pembroke’s sister lies dead, her body drained of blood and with two puncture wounds on her neck. Bram Stoker’s new novel, Dracula, has just been published, and Tillie’s imagination leaps to the impossible: the murderer is a vampire. But it can’t be - can it? A ravenous reader and researcher, Tillie has something of an addiction to truth, and she won’t rest until she unravels the mystery of her sister’s death.

All her life, Zofia has found comfort in two things during times of hardship: books and her best friend, Janina. But no one could have imagined the horrors of the Nazi occupation in Warsaw. As the bombs rain down and Hitler’s forces loot and destroy the city, Zofia finds that now books are also in need of saving. With the death count rising and persecution intensifying, Zofia jumps to action to save her friend and salvage whatever books she can from the wreckage, hiding them away, and even starting a clandestine book club.

Naples, 1931. A bitter wind stalks the city streets, and murder lies at its chilled heart. When Maestro Vezzi, one of the world's greatest tenors, is found brutally murdered in his dressing room at Naples' famous San Carlo theater, the enigmatic and aloof Commissario Ricciardi is called to investigate. Arrogant and bad-tempered, Vezzi was hated by many. But with the livelihoods of the opera at stake, who would have committed such a callous act?

Rescued from a pandemic’s wreckage and raised by the eccentric surgeon Dr. Horace Croft, orphan Nora Beady cares little for Victorian conventions. While other young ladies busy themselves with needlework and watercolors, Nora perfects her sutures and anatomical illustrations. Women face dire consequences if caught practicing medicine, but in Croft’s private clinic, Nora is his most trusted - and secret - assistant. That is, until the new surgical resident, Dr. Daniel Gibson, arrives.

Summer 1940: Hedy Bercu fled Vienna two years ago. Now she watches the skies over Jersey for German planes, convinced that an invasion is imminent. When it finally comes, there is no counterattack from Allied forces - the Channel Islands are simply not worth defending. Most islanders and occupying forces settle into an uneasy coexistence, but for Hedy, the situation is perilously different. For Hedy is Jewish — a fact that could mean deportation, or worse.

The real monsters are men. London 1888, and Jack the Ripper is terrorizing the people of the city. Evelyn, a young woman disfigured by her dangerous work in a matchstick factory, with nowhere to go, does not know what to make of her new position as a maid to the Elephant Man in London Hospital. Evelyn wanted to be locked away from the world like he is, shut away from the filth and dangers of the streets. But in Joseph Merrick, the Elephant Man, she finds a gentle kindred who does not recoil from her and who understands her pain.

It’s 1875, and Alva Webster has perfected her stiff upper lip after three years of being pilloried in the presses of two continents over fleeing her abusive husband. Now his sudden death allows her to return to New York to make a fresh start, restoring Liefdehuis, a dilapidated Hyde Park mansion, and hopefully her reputation at the same time. However, fresh starts aren’t as easy as they seem, as Alva discovers when stories of a haunting at Liefdehuis begin to reach her.

Dying is the only thing people do with any regularity, and Fiona makes her indecorous living cleaning up after the corpses are carted away. Her childhood best friend, Mary, was the last known victim of Jack the Ripper. It's been two years since Fiona scrubbed Mary's blood from the floorboards, and London is no longer buzzing about the Ripper, but Fiona hasn't forgotten. When she's called to a murder in the middle of the night, Fiona finds a victim mutilated in an eerily similar fashion to those of the Ripper, and only a few doors down from Mary's old home.

Mariyah enjoys a simple life in Vylari, a land magically sealed off from the outside world, where fear and hatred are all but unknown. There, she's a renowned wine maker, and her betrothed, Lem, is a musician of rare talent. Their destiny has never been in question. Whatever life brings, they will face it together. Then, a stranger crosses the wards into Vylari for the first time in centuries, bringing a dark prophecy that forces Lem and Mariyah down separate paths. How far will they have to go to stop a rising darkness and save their home?

In the spring of 1685, Lord Hugo Everly, ardent supporter of the Protestant upstart the Duke of Monmouth, vanishes without a trace just before the Monmouth Rebellion, leaving future generations forever baffled as to what might have become of him. In 2013, while visiting Everly Manor as part of her job as a location scout for a film production company, Neve Ashley stumbles onto a secret passage that leads her into the 17th century and straight into the path of the ill-fated lord.