Sep 9, 2012
The 1995 death of a Chicago woman whose body was found on a Wisconsin highway is detailed in the Season 4 premiere.
Unusual Suspects
Unusual Suspects is an American documentary television series on Investigation Discovery. The series debuted on June 21, 2010. The series showcases many of the most shocking and difficult cases in law enforcement history, and also sheds light on the investigations that led to the arrest of the culprits.
Season 4 Episodes
Browse every episode and jump into details.
Sep 16, 2012
In Arkansas, three women are murdered over the course of three years.
Sep 23, 2012
The 1995 murder of an 8-year-old girl sparks a manhunt for her killer.
Sep 30, 2012
The 1999 slaying of a young woman in Germantown, Wis., is recalled.
Oct 7, 2012
The 1985 murders of a young military wife and two of her daughters are investigated.
Oct 14, 2012
Recalling the 1994 murder case of a young mother who was beaten and left in a garbage bin.
Oct 21, 2012
The 1991 murder of a young girl in San Diego is investigated.
Oct 28, 2012
The 2004 murder and dismemberment of a chef is investigated.
Nov 11, 2012
The 1993 strangling death of a young mother in California is probed.
Nov 18, 2012
A look at the 2006 shooting death of a young nightclub worker in Scottsdale, Ariz.
Nov 25, 2012
A 1993 triple homicide results in the deaths of a Kentucky veterinarian and his family.
Dec 2, 2012
The 2001 strangling death of a mother of triplets in Puyallup, Wash., is investigated.
Dec 9, 2012
The 1982 poisoning death of a naval officer is investigated.
Season 4 FAQ
Quick answers about this season's release timeline and episode lineup.
When did Unusual Suspects Season 4 premiere?
Unusual Suspects Season 4 premiered on September 9, 2012.
How many episodes are in Unusual Suspects Season 4?
Unusual Suspects Season 4 has 13 episodes.
What is the first episode of Unusual Suspects Season 4?
The season opens with Season 4 Episode 1, "Pure Evil". It aired on September 9, 2012.
Go to Season 4 Episode 1