A gothic murder mystery set in gritty Victorian-era London, where an intrepid society girl finds herself embroiled in the investigation of a serial killer known as Jack the Ripper.

In the magical underworld of Victorian London, Tessa Gray has at last found safety with the Shadowhunters. But that safety proves fleeting when rogue forces in the Clave plot to see her protector, Charlotte, replaced as head of the Institute. If Charlotte loses her position, Tessa will be out on the street—and easy prey for the mysterious Magister, who wants to use Tessa’s powers for his own dark ends.

When seventeen-year-old orphaned shapechanger Tessa Gray is kidnapped by the villainous Mortmain in his final bid for power, the London Institute rallies to save her, but is beset by danger and betrayal at every turn.

"In an alternative version of Victorian London, a seventeen-year-old Dodger, a cunning and cheeky street urchin, unexpectedly rises in life when he saves a mysterious girl, meets Charles Dickens, and unintentionally puts a stop to the murders of Sweeny Todd"--

In nineteenth-century England, after her father's disappearance Nan Sparrow, ten, works as a "climbing boy," aiding chimney sweeps, but when her most treasured possessions end up in a fireplace, she unwittingly creates a golem.--

Jack and Annie travel back to Victorian London when Merlin asks them to use their magic to inspire Charles Dickens to write "A Christmas Carol."

Eel, an orphan, and his best friend Florrie must help Dr. John Snow prove that cholera is spread through water, and not poisonous air, when an epidemic sweeps across their London neighborhood in 1854.

Lady Helen has retreated to a country estate outside Bath to prepare for her wedding to the Duke of Selburn, yet she knows she has unfinished business to complete. She and the dangerously charismatic Lord Carlston have learned they are a dyad, bonded in blood, and only they are strong enough to defeat the Grand Deceiver, who threatens to throw mankind into chaos. But the heinous death-soaked Ligatus Helen has absorbed is tearing a rift in her mind....

"Imagines an alternate 1826 London, where Ada Lovelace (the world's first computer programmer) and Mary Shelley (author of Frankenstein) meet as girls and form a secret detective agency. Their first case involves a stolen heirloom, a false confession, and an array of fishy suspects"--

When two masterminds--Mary, the daughter of Mary Wollstonecraft, and Ada, the daughter of Lord Byron--are brought together by fate, they make a shocking--and magical--discovery that draws the attention of a mad scientist.