Plot Synopsis

Even your nicest neighbor has a sinister side. By day, he's the All-American boy next door and devoted brother; by night, he commits crime. Each episode unveils the history of these respected role models and trusted members of the community, including the day each of them was charged with a shocking crime. Combining re-enactments with in-depth interviews from some of America's top investigative forces, this series illustrates how these illusive offenders evaded justice for years and how persistent police work ultimately got them caught. UNUSUAL SUSPECTS premiered June 21, 2010 at 10pm after a special sneak preview aired on May 31, 2010 at 10pm. On Sunday, March 31, 2013 at 10pm ET, this series returned for its fifth season. UNUSUAL SUSPECTS returned for its sixth season on Sunday, January 12, 2014 at 9pm ET/PT on Investigation Discovery. In the Season 6 premiere, a young college student was abducted from a friend's home in the middle of the night, and the city of Reno was living in fear of who might be next, with investigators hypothesizing that a serial rapist has escalated his crimes to murder. On Sunday, January 4, 2015 at 9pm ET/PT, Investigation Discovery premiered the seventh season of UNUSUAL SUSPECTS. In the season opener, "Deadly Desire," it's days before Thanksgiving when a small Philly suburb is rocked by the murder of 67-year-old Alice Hufnagle. Investigators run down a litany of suspicious characters on the road to unmasking the beloved matriarch's killer. Season 8 of UNUSUAL SUSPECTS premiered on Sunday, January 10, 2016 at 10pm ET/PT on Investigation Discovery. In the season opener, "New Year's Evil," after 23-year-old Ashley Kline is found murdered in a Pennsylvania wildlife preserve, investigators must piece together the last few moments of her life to determine who killed her. On Wednesday, October 4, 2017 at 9pm ET/PT on Investigation Discovery, this series returned for its ninth season with a new title: UNUSUAL SUSPECTS: DEADLY INTENT. In the season opener, "Field of Nightmares," on a summer day in Springfield, Illinois, an infant daughter left in a sweltering SUV is the only sign of a young mother that's gone missing. A frantic search leads to an eerie sight at the edge of town, and a killer who may have more secrets to expose.
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On Wednesday, January 10, 2018 at 9pm ET/PT, Investigation Discovery premiered the season finale of UNUSUAL SUSPECTS: DEADLY INTENT. In the season ender, "Forget Me Not," a beloved teenage daughter is missing for a month before being discovered murdered in tranquil La Porte, Indiana. Dogged investigators spend 15 years searching several states, only to find a killer close to home.