Seasons & episodes
S4 · E1Pure 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.
S4 · E2The Perfect Suspect 2012-09-16
In Arkansas, three women are murdered over the course of three years.
S4 · E3Wolf in Sheep's Clothing 2012-09-23
The 1995 murder of an 8-year-old girl sparks a manhunt for her killer.
S4 · E4Blood Trail 2012-09-30
The 1999 slaying of a young woman in Germantown, Wis., is recalled.
S4 · E5Mother's Day Murders 2012-10-07
The 1985 murders of a young military wife and two of her daughters are investigated.
S4 · E6Gruesome Discovery 2012-10-14
Recalling the 1994 murder case of a young mother who was beaten and left in a garbage bin.
S4 · E7A Bike Ride to Murder 2012-10-21
The 1991 murder of a young girl in San Diego is investigated.
S4 · E8Murder on the Menu 2012-10-28
The 2004 murder and dismemberment of a chef is investigated.
S4 · E9Triple Threat 2012-11-11
The 1993 strangling death of a young mother in California is probed.
S4 · E10City Under Siege 2012-11-18
A look at the 2006 shooting death of a young nightclub worker in Scottsdale, Ariz.
S4 · E11Killings in Kentucky 2012-11-25
A 1993 triple homicide results in the deaths of a Kentucky veterinarian and his family.
S4 · E12No Mercy 2012-12-02
The 2001 strangling death of a mother of triplets in Puyallup, Wash., is investigated.
S4 · E13Maritime Murder 2012-12-09
The 1982 poisoning death of a naval officer is investigated.