Trying to convince Liv Bergen from resigning from the FBI to return to mining after nearly losing her nephew, Streeter Pierce asks Liv for one condition: to wait six months before making her resignation official or public.

Five months into the condition, Streeter becomes desperate to keep Liv, so he bends the rules and assigns her a seven year old cold case – Brianna Keller, a young girl taken from her bedroom during a slumber party and found dead along the road in the desert near Vegas. Streeter believes if Liv sees how she can help her family, help avenge a child’s death, she may not feel as if she’s endangering them. So what better way than to assign her Brianna’s case? After all, Brianna is Liv’s niece, her sister Barbara’s youngest child.