Missing? Kidnapped?

A Great Falls, Montana detective comes from a large family, who is the youngest. She becomes a detective after a tragedy came upon her family. In one of Averys first cases, a missing child was later pronounced dead...But is the child dead?
Six years later the case still haunts her until new evidence comes about and send Avery into a whirlwind of the past and the present. Will the case get solved in time? Or will her family's past hinder the case?