A burglary unlocks a decades-old case. A safety deposit box company unwittingly exposes a female political activist-fugitive who has been hiding for over 20 years. Detectives locate and arrest one of the four involved in the burglary, and ultimately catch the female fugitive who is accused of killing a policeman during a 1971 robbery.

When Briscoe and Logan suspect that a missing infant may have been murdered rather than kidnapped, they uncover a terrible family secret.