Lily is forced to re-investigate her first case a mass murder at a once popular diner.

The 1943 case of a factory worker who died under suspicious circumstances is reopened. When a friend of the victim revels a connection between her and an obsessive manager.

The missing persons case of a woman who disappeared in 1978 is reopened when a film of her murder is found.

When bones are found at the excavation site of a former prison. The 1968 case of a prisoner who went missing during Johnny Cash's famous Folsom Prison concert is reopened.

In 1991 the Cambodian parents of Kara were murdered in cold blood. Kara was 6 years old at the time and always wanted to find out who the killers were. Now that she discovered a priceless armband of her mother's on E-Bay, she begs the detectives to find out who the seller was.

The case of Rita Baxter is reopened when a body having the same secret markings that were on her. Is discovered in a park by local sheriffs.

The case of a man who was murdered in 1983 is reopened at the behest of his former partner. Upon further investigation it's found that he was an outspoken aids awareness activist and was disowned by his wealthy family because of his sexuality.

The son of a man murdered in 1953 asks for his case to be reopened. It's learned that the victim was in danger due to his supposed membership with the Communist Party of America.

When a body is found in a wildlife preserve it mirrors a case from 1985. It’s then discovered that eight more victims died in the same fashion and that an unknown psychopath may not be the killer.

The 2000 murder of a young Puerto Rican District Attorney is reopened at his widow's request. Scotty takes the lead and must navigate a sea of embezzlement and gay prostitution to find the truth about this community hero.

The 1978 death of a cult member is re-examined when a new death under similar circumstances occurs. A de-programmer who worked with the 1978 victim is now accused in this recent case. Meanwhile Valens must deal with his own tragedy.

A boxing referee makes a death-bed confession that prompts the team to re-open the 1976 case of a boxer who died after a match.

When the murder weapon of a little girl shot in a drive-by in 1987 turns up. The crew investigates and finds the motive may have been closer to the child then first thought.

The case of Ellie McCormick is re-opened after her brother finds enough evidence for a second look.

The death of a mentally disabled child in 1993 is re-opened after drawings depicting his death are found at his grave.

A priest comes forward with information about the 1998 kidnapping of a young boy reopening the case.

The 1982 murder of a Philadelphia socialite is reopened when her wedding ring is found at a crime scene.

A former love interest of Nick's prompts the team to reopen the 1995 case of her murdered sister.

The 1963 murder of a young man whose corpse was discovered by Jeffries as a child is reopened.

When a parolee confesses to stealing money from a murdered factory worker his case is reopened.

When a serial killer is about to be released from prison the 1977 murder of a man after the premiere of The Rocky Horror Picture Show is reopened.

The 1932 case of a young woman who went missing is reopened after a truck with human remains is pulled from the Delaware river.

The discovery of nine human skulls leads the team to focus their attention back on George Marks. The suspected serial killer who walked out of homicide a free man due to lack of evidence.