Nefertiti's Heart's Genres are considered New Adult/Steam Punk/ Mystery.

Synopsis:

Cara Devon has always suffered curiosity and impetuousness, but tangling with a serial killer might cure that. Permanently.

London, 1861. Impoverished noble Cara has a simple mission after the strange death of her father - sell off his damned collection of priceless artifacts. Her plan goes awry when aristocratic beauties start dying of broken hearts, an eight inch long brass key hammered through their chests. A killer hunts amongst the nobility, searching for a regal beauty and an ancient Egyptian relic rumored to hold the key to immortality.

Her Majesty’s Enforcers are in pursuit of the murderer and they see a connection between the gruesome deaths and Cara. So does she, somewhere in London her father hid Nefertiti’s Heart, a fist sized diamond with strange mechanical workings. Adding further complication to her life, notorious crime lord, Viscount Nathaniel Lyons is relentless in his desire to lay his hands on Cara and the priceless artifact. If only she could figure out his motive.

Self-preservation fuels Cara's search for the gem. In a society where everyone wears a mask to hide their true intent, she needs to figure out who to trust, before she makes a fatal mistake.