Unusual Suspects

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

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  • All (64)
  • Season 6 (1)
  • Season 5 (13)
  • Season 4 (13)
  • Season 3 (13)
  • Season 2 (11)
  • Season 1 (13)
  • Dead End Trail

    Full Episode

    S 6 : Ep 11 - 3/30/14

    The murder of a Southern Illinois University student is investigated.
  • Dangerous Fortune

    Full Episode

    S 5 : Ep 13 - 6/28/13

    In 2005, a fortuneteller and her daughter are brutally murdered in their Westminster, CA home. Ritualistic elements leave investigators baffled until a paper trail leads them to their coldblooded culprit.
  • The Last Resort

    Full Episode

    S 5 : Ep 12 - 6/23/13

    In 2000, the manager of a Florida hotel is doused with acid in broad daylight. He dies from his wounds 11 days later. Investigators must contend with bum tips, false identities and a nationwide manhunt before the shocking culprit is revealed.moreless
  • When Evil Strikes

    Full Episode

    S 5 : Ep 11 - 6/16/13

    In 2004, a former marine goes missing from his North Carolina home. Investigators sift through a mountain of tips and small-town rumors before a surprise witness comes forward who may hold the key to the mysterious disappearance.moreless
  • Little Boy Lost

    Full Episode

    S 5 : Ep 10 - 6/9/13

    In 1985, the body of an 11 year-old boy is found, days after he disappeared from his father's Flint, Michigan home. A mother's tireless pursuit of justice leads investigators to a crucial clue and the devastating truth behind her son's death.moreless
  • Manufacturing Murder

    Full Episode

    S 5 : Ep 9 - 6/2/13

    In 1997, four bodies are found in a Bartow, Florida factory, all with close ties to company management. Was it a robbery gone wrong, or premeditated quadruple homicide? Dogged investigation reveals an intricate murder plot and a devious mastermind.moreless
  • Sin City Slaying

    Full Episode

    S 5 : Ep 8 - 5/26/13

    In 1992, single mother of three Martha Doney is found brutally stabbed in her Las Vegas home. Was she a victim of opportunity, or a target of jealous rage? Years later, modern technology brings the case to a surprising conclusion.moreless
  • The Deacon's Demise

    Full Episode

    S 5 : Ep 7 - 5/19/13

    In 1992, a church deacon from Upland, CA is found murdered in Tijuana. Did a secret double life lead to the death of this married father of four? Years later, a fresh look at the case helps investigators unravel the complex plot to murder the deacon.moreless
  • Deathbed

    Full Episode

    S 5 : Ep 6 - 5/12/13

    In 1972, a postal worker is found brutally murdered in his San Diego apartment. Investigators wade through suspect after suspect, from close friends to hardened criminals. Thirty-seven years later, old evidence points them to their killer.moreless
  • Phantom Predator

    Full Episode

    S 5 : Ep 5 - 4/28/13

    When a serial rapist targets St. Louis in the 1990's, a multi-agency task force exhausts countless leads in their search for the mysterious predator. Years later, a concerned citizens helps investigators bring an unlikely culprit to justice.moreless
  • Driven to Murder

    Full Episode

    S 5 : Ep 4 - 4/21/13

    In February of 1992, a Maryland businessman is found shot on Federal land. A veteran US Parks detective follows a trail of clues up and down the eastern seaboard before unraveling the tragic events that led to murder.moreless
  • Burning Fury

    Full Episode

    S 5 : Ep 3 - 4/14/13

    In 1988, a 29 year-old man is found tortured and murdered in his burnt-up apartment in Sunset Beach, CA. As two decades pass, friends, rivals, roommates and criminals are scrutinized before investigators close in on a surprising and sadistic killer.moreless
  • Christmas Mourning

    Full Episode

    S 5 : Ep 2 - 4/7/13

    In Georgia, just days before Christmas, Beverly Eller is found murdered in her apartment. After years of tireless investigation, a critical piece of evidence helps investigators unravel the bizarre chain of events that led to Beverly's tragic murder.moreless
  • Deadly Forest

    Full Episode

    S 5 : Ep 1 - 3/31/13

    In 1985, a popular high school girl is found murdered in the Angeles National Forest. Investigators run through a network of a classmates, rivals, and troublemakers to find her killer. Years later, a break in the cases exposes the shocking truth.moreless
  • Maritime Murder

    Full Episode

    S 4 : Ep 13 - 12/9/12

    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.moreless
  • No Mercy

    Full Episode

    S 4 : Ep 12 - 12/2/12

    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.moreless
  • Killings in Kentucky

    Full Episode

    S 4 : Ep 11 - 11/25/12

    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.moreless
  • City Under Siege

    Full Episode

    S 4 : Ep 10 - 11/18/12

    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.moreless
  • Unusual Suspects

    Full Episode

    S 4 : Ep 9 - 11/11/12

    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.moreless
  • Murder on the Menu

    Full Episode

    S 4 : Ep 8 - 10/28/12

    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.moreless
  • A Bike Ride to Murder

    Full Episode

    S 4 : Ep 7 - 10/21/12

    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.moreless
  • Gruesome Discovery

    Full Episode

    S 4 : Ep 6 - 10/14/12

    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.moreless
  • Mother's Day Murders

    Full Episode

    S 4 : Ep 5 - 10/7/12

    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.moreless
  • Blood Trail

    Full Episode

    S 4 : Ep 4 - 9/30/12

    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.
  • Wolf in Sheep's Clothing

    Full Episode

    S 4 : Ep 3 - 9/23/12

    "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?moreless
  • The Perfect Suspect

    Full Episode

    S 4 : Ep 2 - 9/16/12

    "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.moreless
  • Pure Evil

    Full Episode

    S 4 : Ep 1 - 9/9/12

    "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.moreless
  • Bathtub Killer

    Full Episode

    S 3 : Ep 13 -

    In 1996, two women are murdered in the same Texas apartment complex. Authorities follow every lead but the case goes cold. Three years later, DNA evidence, and a seemingly unrelated crime lead authorities to the sadistic "Bathtub Killer."moreless
  • Random Act of Madness

    Full Episode

    S 3 : Ep 12 -

    A Maine father of four is found shot to death after going out for a beer. Is he the victim of a family squabble? Did he run afoul of local crooks? Years later, an unrelated cold case and a guilty conscience help bring the killer to justice.moreless
  • Deadly Denial

    Full Episode

    S 3 : Ep 11 -

    When a Kentucky woman is murdered in her home, detectives theorize the gun advocate knew her attacker. Investigators scrutinize family, friends, and boyfriends old and new before a shaky alibi and forensic evidence point to the killer.moreless
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