Several weeks after being shot, Lilly returns to work and tries to convince Stillman and herself that she's emotionally ready to spearhead the re-opening of the 1994 case of three slain boys for which two teens may have been wrongfully convicted.
The team re-opens the 1998 case of a promiscuous 15-year-old who was fatally beaten and found partially clothed after one of her tank tops shows up in the wheel well of an abandoned van.
When a young Amish girl comes looking for her sister who disappeared during her rumspringa the team looks into homicides at the time and finds and reopens the girl's case.
The team re-opens the 1953 murder case of a 19-year-old aspiring rock 'n roll star when new evidence suggests that he was killed in his uncle's five & dime shop and not behind the blues club where his body was found. As the team investigates they discover hidden family secrets.
The team re-opens the 1992 case of a 14-year-old inner-city math genius, who was shot after his 16-year-old half-brother started using him for the illegal benefit of a local gang.
The team investigates the murder of a woman who made headlines in 1938 by vanishing the night of Orson Welles's "War of the Worlds" radio broadcast as her family prepared to outrun the "aliens."
The team hunts for a serial killer after a newly missing boy's body is found in a rented storage unit and the remains of three boys who vanished between 1999 and 2003 are consequently found in separate units issued under the same name.
The team investigates whether a teenage girl, who caused a stir by dressing and acting like a boy, was a victim of murder, or suicide as was believed in 1963. Meanwhile, the Chief takes a suspension to protect Scotty from Internal Affairs.
When "rapist" is written on the gravestone of a popular college student who was fatally shot 25 years ago, the team's murder suspects include several former co-eds who accused him of date rape. Meanwhile, Jeffries fills in while the Chief is on suspension.
While investigating whether a man's internment at a camp for Japanese-Americans in California during World War II had any bearing on his 1945 murder shortly after his release, Lily also attempts to get Stillman to withdraw his retirement papers.
The team searches for a serial bomber whose latest pipe bomb maimed the wrong target and whose three previous bombings, in 1999, 2001 and 2003, collectively blinded a man and killed two others.
A 17-year-old girl's abusive father is the team's primary suspect for her 1998 murder, until they discover that the victim ran off with a Neo-Nazi ex-con shortly before her slaying.
After a substantial splatter of the blood of a popular deaf teen who went missing in 2006 is discovered in a storage room at the high school for the deaf he attended, the team attempts to find the boy's body and killer.
Lilly and Valens head to West Virginia to retrieve a primary suspect for the presumed 2007 homicide of a young woman who was abducted from the parking lot outside her engagement party.
When newfound evidence confirming the murder of an ex-con is discovered in the freezer of a drug dealer, the team sets out to find the man's killer.
Lilly and her team set out to find a 1962 suicide victim's killer after the woman's granddaughter provides evidence that the suicide note was not written in her grandmother's handwriting.
The team investigates when a former drug addict insists she saw her son in a park three years after he allegedly died in an apartment fire.