Unusual Suspects

Season 4

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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.
Where to Watch Season 4
13 Episodes
  • Pure Evil
    E1
    Pure EvilEpisode 1
  • The Perfect Suspect
    E2
    The Perfect SuspectEpisode 2
  • Wolf in Sheep's Clothing
    E3
    Wolf in Sheep's ClothingEpisode 3
  • Blood Trail
    E4
    Blood TrailEpisode 4
  • Mother's Day Murders
    E5
    Mother's Day MurdersEpisode 5
  • Gruesome Discovery
    E6
    Gruesome DiscoveryEpisode 6
  • A Bike Ride to Murder
    E7
    A Bike Ride to MurderEpisode 7
  • Murder on the Menu
    E8
    Murder on the MenuEpisode 8
  • Triple Threat
    E9
    Triple ThreatEpisode 9
  • City Under Siege
    E10
    City Under SiegeEpisode 10
  • Killings in Kentucky
    E11
    Killings in KentuckyEpisode 11
  • No Mercy
    E12
    No MercyEpisode 12
  • Maritime Murder
    E13
    Maritime MurderEpisode 13

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