As a bogler's apprentice, 10-year-old Birdie has faced down plenty of monsters lurking in the chimneys, wells, and other dark places of Victorian London. She serves as bait, singing sweetly to lure the bogles out so her master, the well-seasoned Go-Devil Man Alfred Bunce, can kill them with his trusty spear. Enter the wealthy folklorist Miss Eames, who is determined to find more scientific ways of drawing out the monsters, and Birdie fears that her livelihood may be threatened by the well-meaning lady.

The foggy streets of London's Whitechapel district have become a nocturnal hunting ground for Jack the Ripper, and no woman is safe. Flower girl Constance Piper is not immune to dread, but she is more preoccupied with her own strange experiences of late. Clairvoyants seem to be everywhere these days. In desperation, even Scotland Yard has turned to them to help apprehend the Ripper.

It is the summer of 1868, and Sherlock Holmes is 14. On break from boarding school, he is staying with eccentric strangers - his uncle and aunt - in their vast house in Hampshire. When two local people die from symptoms that resemble the plague, Holmes begins to investigate what really killed them, helped by his new tutor, an American named Amyus Crowe. So begins Sherlock’s true education in detection, as he discovers the dastardly crimes of a brilliantly sinister villain of exquisitely malign intent.

Nathaniel is eleven-years-old and a magician's apprentice, learning the traditional art of magic. All is well until he has a life-changing encounter with Simon Lovelace, a magician of unrivaled ruthlessness and ambition. When Lovelace brutally humiliates Nathaniel in public, Nathaniel decides to speed up his education, teaching himself spells far beyond his years. With revenge on his mind, he masters one of the toughest spells of all and summons Bartimaeus, a five-thousand-year-old djinni, to assist him.

Gaius Petrius Ruso is a divorced and down-on-his-luck army doctor who has made the rash decision to seek his fortune in an inclement outpost of the Roman Empire, namely Britannia. After a 36-hour shift at the army hospital, he succumbs to a moment of weakness and rescues an injured slave girl, Tilla, from the hands of her abusive owner. And before he knows it, Ruso is caught in the middle of an investigation into the deaths of prostitutes working out of the local bar.

Meet Enola Holmes, teenaged girl turned detective and the younger sister to Sherlock Holmes. When Enola Holmes, sister to the detective Sherlock Holmes, discovers her mother has disappeared, she quickly embarks on a journey to London in search of her.

Victorian London is a cesspool of crime, and Scotland Yard has only 12 detectives - known as “The Murder Squad” - to investigate thousands of murders every month. Created after the Metropolitan Police’s spectacular failure to capture Jack the Ripper, The Murder Squad suffers rampant public contempt. They have failed their citizens. When Walter Day, the squad’s newest hire, is assigned the case of the murdered detective, he finds a strange ally in the Yard’s first forensic pathologist, Dr. Bernard Kingsley.

It is 1845. New York City forms its first police force. The great potato famine hits Ireland. These two seemingly disparate events will change New York City. Forever.... Timothy Wilde tends bar near the Exchange, fantasizing about the day he has enough money to win the girl of his dreams. But when his dreams literally incinerate in a fire devastating downtown Manhattan, he finds himself disfigured, unemployed, and homeless. His older brother obtains Timothy a job in the newly minted NYPD, but he is highly skeptical of this new "police force".

The year is 1895. London is scared. A killer haunts the city's streets. The poor are hungry. Crime bosses are taking control. The police force is stretched to the breaking point. The rich turn to Sherlock Holmes, but the celebrated private detective rarely visits the densely populated streets of South London, where the crimes are sleazier and the people are poorer. In the dark corner of Southwark, victims turn to a man who despises Holmes, his wealthy clientele, and his showy forensic approach to crime: Arrowood.

In Victorian England, orphan Mary Quinn lives on the edge. Sentenced as a thief at the age of 12, she’s rescued from the gallows by a woman posing as a prison warden. In her new home, Miss Scrimshaw’s Academy for Girls, Mary acquires a singular education, fine manners, and a surprising opportunity. The school is a cover for the Agency — an elite, top secret corps of female investigators with a reputation for results — and at 17, Mary’s about to join their ranks.

It's 1727. Tom Hawkins is damned if he's going to follow in his father's footsteps and become a country parson. Not for him a quiet life of prayer and propriety. His preference is for wine, women, and cards. But there's a sense of honor there too, and Tom won't pull family strings to get himself out of debt - not even when faced with the appalling horrors of London's notorious debtors' prison: The Marshalsea Gaol.

Nineteen-year-old Nell Hallam, an exceptionally talented pianist, aspires to attend the Royal Academy; but with tuition beyond her means, Nell sets out to earn the money herself - by playing piano in a popular Soho music hall. She will have to disguise herself as a man and slip out at night to do it. Spending evenings at the Octavian is like entering an alternate world - one of dark secrets. And when Nell stumbles upon the operations of an infamous crime ring working in the shadows of the music hall, she is drawn into a conspiracy that stretches the length of London.

Theodosia Throckmorton has her hands full at the Museum of Legends and Antiquities in London. Her father may be head curator, but it is Theoand only Theowho is able to see all the black magic and ancient curses that still cling to the artifacts in the museum. Sneaking behind her fathers back, Theo uses old, nearly forgotten Egyptian magic to remove the curses and protect her father and the rest of the museum employees from the ancient, sinister forces that lurk in the museums dark hallways.

A team of unlikely friends - an orphaned street musician, a hard-working girl from the tenements, and a talented clockmaker's apprentice - discover that together they can overcome even the darkest of fears.

London, 1889. For Ira Adler, former rent-boy and present plaything of crime lord Cain Goddard, stealing back the statue from Goddard's blackmailer should have been a doddle. But inside the statue is evidence that could put Goddard away for a long time under the sodomy laws, and everyone's after it, including Ira's bitter ex, Dr. Timothy Lazarus.