Cara Wainwright thinks life can’t get tougher when her mother's cancer becomes terminal—until she returns home from the hospital and finds a courtyard full of police officers and her houseguests dead.

Greenville, SC Detective David Morris, is unsure if Cara is the suspect or the intended murder victim. As he searches for insight into her family, their mounting secrets, and the conflicting evidence from multiple crimes, his attraction to Cara complicates his investigation. Is the lure need, manipulation—or real?

While David pursues forensic evidence, Cara pushes for answers about her father's possible involvement, for at the center of the mystery stands Cypher—the company her father built and will take any measures to defend.

When the assassin strikes again, Cara and David must trust each other and work together to stop the killer before he eliminates the entire Wainwright family.