If anyone can tell the difference between monsters and humans, it’s Dahlia Nite. For nearly a century, she’s hunted one to protect the other; safeguarding humanity from the creatures that slip through the torn veil between the worlds—creatures like her. But the lines are blurring. As people begin mutating and combusting on the streets, Dahlia realizes a strange affliction has descended upon Sentinel City. The mysterious ailment strikes all walks of life, from the posh, high-end nightclub district to the homeless community. Its victims, driven to random acts of savagery, are drawing attention too fast to cover up. Assigned to the case, Dahlia and her human partner, Detective Alex Creed, investigate the deaths. But all they have are questions and bodies, and a public on the verge of panic. Working behind the scenes with her self-appointed sidekick, Casey Evans, Dahlia struggles to discover what, or who, is behind the alarming transformations. As the violence spreads and the mystery unfolds, she wonders: are the victims still human? Were they ever? Chain Reaction is the second book in the Nite Fire Series.