Second Nature

Rookie FBI Agent Sierra Knight follows her murdered mother’s footsteps in joining the FBI, determined to solve her cold case. Armed with a box of unsolved murder files, Sierra must hunt an elusive killer across years of history. But stirring up the past may just leave her to be targeted herself…

Hospital workers are being murdered with the very tools meant to heal, but Sierra Knight believes the mentally ill patient who confesses might be covering for the true killer. Using her mother's meticulous case notes to expand beyond the hospital's walls, Sierra must prove that justice failed, while a murderer remains free to kill again.