Season 4
Episodes
1. Pure Evil
2012-09-09
The 1995 death of a Chicago woman whose body was found on a Wisconsin highway is detailed in the Season 4 premiere.
2. The Perfect Suspect
2012-09-16
In Arkansas, three women are murdered over the course of three years.
3. Wolf in Sheep's Clothing
2012-09-23
The 1995 murder of an 8-year-old girl sparks a manhunt for her killer.
4. Blood Trail
2012-09-30
The 1999 slaying of a young woman in Germantown, Wis., is recalled.
5. Mother's Day Murders
2012-10-07
The 1985 murders of a young military wife and two of her daughters are investigated.
6. Gruesome Discovery
2012-10-14
Recalling the 1994 murder case of a young mother who was beaten and left in a garbage bin.
7. A Bike Ride to Murder
2012-10-21
The 1991 murder of a young girl in San Diego is investigated.
8. Murder on the Menu
2012-10-28
The 2004 murder and dismemberment of a chef is investigated.
9. Triple Threat
2012-11-11
The 1993 strangling death of a young mother in California is probed.
10. City Under Siege
2012-11-18
A look at the 2006 shooting death of a young nightclub worker in Scottsdale, Ariz.
11. Killings in Kentucky
2012-11-25
A 1993 triple homicide results in the deaths of a Kentucky veterinarian and his family.
12. No Mercy
2012-12-02
The 2001 strangling death of a mother of triplets in Puyallup, Wash., is investigated.
13. Maritime Murder
2012-12-09
The 1982 poisoning death of a naval officer is investigated.