Ex-Army Civil Affairs specialist Jo Gunning is a loner. No commitments. No fixed address. She's enjoying her anonymity in Virginia when she crosses paths with a runaway teenage girl in need. Assisting the girl in getting home leads to a phone call for help, and a claim from the girl that her father is holding her hostage. As Jo searches for answers, she finds that nothing is what it seems, and no one is telling the truth.

For Denver Homicide detective Sarah Spillman, a secret from her past haunts each new investigation and could derail her hard-earned career. A missing boy’s body is found in a dumpster in a seemingly idyllic Denver neighborhood, and the list of suspects includes the boy’s mother and father. Sarah barely begins her investigation when a man who lived nearby is also discovered dead, an apparent suicide. Sarah continues to dig deeper, looking for a link between the two deaths, only to find the lies are piling up.

Wounded in the line of duty, former K9 Handler Maddie Castle finds herself back to square one. The bullet that shredded her leg took the life of her four-legged partner. The pain of recovery goes well beyond the daily physical torment she endures.

Blake Wilder is plagued with nightmares from her dark and twisted past. Fourteen years ago, her entire family was taken from her. Her parents murdered and her sister taken. At the age of 22, Blake joined the FBI in hopes of one day discovering the truth behind the mysteries of her own past.

It was Beth Katz’s serial killer father who made her like she is: a successful FBI agent and an unstoppable vigilante dedicated to hunting down murderers who have evaded capture. Beth will push herself to the limits to deliver justice. Even if it means killing those who deserve to die.