Synopsis from Goodreads:

In a time when Shadowhunters are barely winning the fight against the forces of darkness, one battle will change the course of history forever. Welcome to the Infernal Devices trilogy, a stunning and dangerous prequel to the New York Timesbestselling Mortal Instruments series.

The year is 1878. Tessa Gray descends into London’s dark supernatural underworld in search of her missing brother. She soon discovers that her only allies are the demon-slaying Shadowhunters—including Will and Jem, the mysterious boys she is attracted to. Soon they find themselves up against the Pandemonium Club, a secret organization of vampires, demons, warlocks, and humans. Equipped with a magical army of unstoppable clockwork creatures, the Club is out to rule the British Empire, and only Tessa and her allies can stop them.

My mini-review:

“One must always be careful of books,” said Tessa, “and what is inside them, for words have the power to change us.”

This is very close to 5 stars for me. I’m giving it ★★★★ (4.5 stars) for now. All it took was a few pages for me to become immersed in the Shadowhunter world. And now I can’t get enough. I am really looking forward to reading “Clockwork Prince” next. I am obsessed.