They soon discover that Miriam was part of a group called "Wednesday's Women" who used Tupperware sales as a cover to travel to Mississippi during Freedom Summer and help disadvantaged African-American schoolchildren, much to the ire of white southerners.
When human remains and dog tags are found inside an old oil barrel, the team investigates the disappearance of Jimmy Tulley, a 17-year-old Marine who was reported AWOL on his last night of shore leave in 1951.
Nick and the team reexamine the 1989 murder of Nadia Koslov, a 18-year-old Russian opera singer who emigrated from the former Soviet Union with her family when her brother recovers her long-lost bag from a stranger on the street.
When an inmate exchanges some procured information on an old shooting, the team reopens the 2005 murder of Dexter Collins, a 30-year-old African-American politician who vowed to rid the lower-class neighborhood he grew up in of drug dealers who preyed on young kids.
The detectives reinvestigate the 2007 murder of Ed Dubinski, a 34-year-old auto mechanic whose lottery winnings earned him a number of fair-weather friends, when it is found that his bank account had recently been accessed.
The team reinvestigates the 1976 murder of 17-year-old honor student Sarah Blake when her father, a recent convict who was serving a prison sentence at the time of her death, discovers a photograph of her with members of a notorious motorcycle gang.
When a robbery at a local convenience store leaves longtime owner Henry "Pop" Walters dead and Jeffries fighting for his life, the team juggles tracking the shooter down and curtailing their emotions.