Young men shipped off to war would never return. Forensic experts work to tell their stories.

This episode begins by showing how forensic scientists work backwards from a confession to concrete evidence. Before progressing to why cold cases shouldn't be forgotten about. It does not matter if it is minutes or years after the crime, these experts work to tell the stories of the victims.

Scientists explore the differences between targeted and random poisoners, and the significance of disguising a targeted act of poison as a random act, such as the Tylenol case in Chicago.