Razor Dreams: Mass Market Paperback (Jonathan Shade) (Volume 7)

...that's all Jonathan needs. Some easy little supernatural problem to gain Kelly Chan's trust, and keep her from walking out of his life forever.

The case goes from simple to deadly when Jonathan's actions wake an evil entity with murder on its agenda. The only way to stop it is to call in reinforcements from the Manhattan branch of Dragon Gate Industries.

But calling DGI means dealing with the head of the division -- Jonathan's older sister. She blames him for the death of their parents, so she'd rather see her brother run out of New York than lift a spell book to help.

The series so far:

Modern Sorcery
Acheron Highway
Dragon Gate
Anubis Nights
Sunset Specters
Wizard's Nocturne
Razor Dreams