The 1953 murder of a white school teacher, a communist sympathizer who was involved in civil-rights issues, is reopened after the victim's youngest son asks for it to be reinvestigated. The probe reveals that the slain man was killed on the same day that the Rosenbergs were executed and was set to testify the next day before the House Committee on Un-American Activities. Also, Lilly's estranged sister unexpectedly shows up.

The widow of a slain Connecticut ADA, whose 2000 stabbing death in Philadelphia was never solved, asks that the case be reopened to clear her late husband's name after he's accused of having stolen money from the DA's office by a colleague running for state treasurer. The investigation reveals that the deceased was prosecuting a high-profile murder case at the time of his death, one that could have boosted his career.