Unusual Suspects - Season 4

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Sunday 10:00 PM on Investigation Discovery Premiered Jan 01, 2010 In Season

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Previously Aired Episode

AIRED ON 10/18/2017

Season 9 : Episode 3

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AIRS ON 10/25/2017

Season 9 : Episode 4

Episode Guide

  • Maritime Murder
    Episode 13
    12/9/12
    0.0
    In 1982, a Naval Officer dies from a mysterious illness. When toxicology reports reveal he was poisoned, Naval Investigators sift through a ship of thousands, and countless theories before the truth behind the victim's painful death is revealed.
  • No Mercy
    Episode 12
    12/2/12
    0.0
    In 2001, a mother of triplets is found strangled in her Puyallup, Washington home. Was she the victim of dangerous obsession, or a classic love triangle? As investigators piece together the victim's final moments, a shocking killer is revealed.
  • 11/25/12
    0.0
    On a winter morning in 1993, a beloved veterinarian and his wife and son are viciously gunned down in their rural Kentucky home. Investigators leave no stone unturned as the bitter truth behind this tragic, triple-slaying is revealed.
  • City Under Siege
    Episode 10
    11/18/12
    0.0
    In 2006, a 20-year-old female is brutally gunned down while walking home from her shift at a Scottsdale, AZ nightclub. Could her death be connected to a violent shooting spree plaguing the area? A tip reveals the gunman's shocking identity.
  • Unusual Suspects
    Episode 9
    11/11/12
    0.0
    June, 1993, a California mother-of-two is found strangled in her home. Was she silenced by her estranged husband? An obsessed coworker? A fledgling serial killer? Undaunted, a veteran detective uncovers evidence that brings a killer to justice.
  • Murder on the Menu
    Episode 8
    10/28/12
    0.0
    April, 2004, the dismembered body of a chef is found in trash bags along a highway. Detectives grill everyone from a bitter, estranged wife to a blade-happy sous-chef. Finally, the bones give investigators the twisted answer to a bloody puzzle.
  • 10/21/12
    0.0
    In 1991, the brutalized body of a San Diego girl is found in a weed-choked canyon. Could a close encounter with a church-going couple reveal a dark secret and the identity of a child killer? Detectives unearth a shocking truth no one can believe.
  • Gruesome Discovery
    Episode 6
    10/14/12
    0.0
    In 1994, the brutalized body of a young mother is found in a 55-gallon trash barrel. Did she get caught in a love triangle, or did a coworker's obsession go to far? When the shocking truth is untangled, a vicious killer faces final justice.
  • 10/7/12
    0.0
    In 1985, a young military wife and two of her three little girls are viciously murdered in their home. In a twisted case filled with unusual suspects, the man who gets convicted goes free. But nothing is what it seems.
  • Blood Trail
    Episode 4
    9/30/12
    0.0
    In 1999, Theresa Wesolowski of Germantown, WI is found with 46 stab wounds. Unraveling the complex mystery, investigators find a tiny clue that finally nails the killer, hiding in plain sight.
  • 9/23/12
    0.0
    "In 1995, 8 year-old Maria Piceno of Lemoore, CA is abducted near her home. When her body is recovered, the search for a missing girl turns into a hunt for a vicious killer. Could one woman\'s searing memories be the key to a shocking truth?
  • 9/16/12
    0.0
    "Between 1993 and 1996, the rape and murder of three Arkansas women puts local detectives on the trail of a sadistic killer. In their hunt for the truth, investigators learn that nothing in these cases is cut and dry.
  • Pure Evil
    Episode 1
    9/9/12
    0.0
    "In 1995, the body of a Chicago woman is found dumped on a Wisconsin highway. Was she the victim of a lover\'s spat turned deadly? Did she run afoul of local criminals? Investigators uncover the shocking truth behind the victim\'s tragic end.