It's the beginning of the end.

Part of an elite order of slayers, Harley knows monsters exist. She lives to fight them. But she discovers too late that the most vicious, deceitful monster of all is far closer than she'd ever imagined.

Loaded for vengeance, Harley goes undercover with the help of an autonomous group of paranormal investigators, The Cerberus Foundation, to find and stop whoever is setting nightmare creatures loose on the world. Though working with Cerberus has its benefits, Harley finds her new teammate, Brahms, distracting and more than a bit irritating.

As they follow the trail of death, Harley discovers that all is not what it seems in Cerberus. Particularly with Brahms.

Bereft of everyone she once trusted. Torn by grief and suspicion. Can she summon the strength to stop a malevolent group from thrusting the world into another dark age where people will once again fear what lurks in the dark?