Unusual Suspects Season 4
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.
Watch Trailer
Unusual Suspects Season 4 Full Episode Guide
The 1982 poisoning death of a naval officer is investigated.
The 2001 strangling death of a mother of triplets in Puyallup, Wash., is investigated.
A 1993 triple homicide results in the deaths of a Kentucky veterinarian and his family.
A look at the 2006 shooting death of a young nightclub worker in Scottsdale, Ariz.
The 1993 strangling death of a young mother in California is probed.
The 2004 murder and dismemberment of a chef is investigated.
The 1991 murder of a young girl in San Diego is investigated.
Recalling the 1994 murder case of a young mother who was beaten and left in a garbage bin.
The 1985 murders of a young military wife and two of her daughters are investigated.
The 1999 slaying of a young woman in Germantown, Wis., is recalled.
The 1995 murder of an 8-year-old girl sparks a manhunt for her killer.
In Arkansas, three women are murdered over the course of three years.
The 1995 death of a Chicago woman whose body was found on a Wisconsin highway is detailed in the Season 4 premiere.