When Special Agent Will Trent arrives in Grant County, he is met by a group of police officers who will do anything to protect each other, along with a multitude of unanswered questions regarding the death of an inmate. The alleged murderer has confessed – and then committed suicide in his cell. Detective Lena Adams also seems to have secrets from Will, and coroner Sara Linton, widow of the deceased police chief Jeffrey Tolliver, is convinced that Lena drove the mentally challenged suspect to suicide. Who can Will Trent still trust?.