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.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | The Killer Nearby | 2010-05-31 | 60 min |
| Season 1 | Episode 2 | Betrayal of Trust | 2010-06-21 | 60 min |
| Season 1 | Episode 3 | A Mother's Conviction | 2010-06-28 | 60 min |
| Season 1 | Episode 4 | Will to Murder | 2010-07-05 | 60 min |
| Season 1 | Episode 5 | Murder in Biloxi | 2010-07-12 | 60 min |
| Season 1 | Episode 6 | Monster in Spokane | 2010-07-19 | 60 min |
| Season 1 | Episode 7 | Millionaire's Murder | 2010-07-26 | 60 min |
| Season 1 | Episode 8 | Missing Executive | 2010-08-02 | 60 min |
| Season 1 | Episode 9 | Burned | 2010-08-09 | 60 min |
| Season 1 | Episode 10 | Lovers and Liars | 2010-08-16 | 60 min |
| Season 1 | Episode 11 | Overkill | 2010-08-23 | 60 min |
| Season 1 | Episode 12 | Happy Face Killer | 2010-08-30 | 60 min |
| Season 1 | Episode 13 | Cold Blooded | 2010-09-06 | 60 min |
| Season 2 | Episode 1 | Never Came Home | 2011-08-14 | 60 min |
| Season 2 | Episode 2 | Getting Even | 2011-08-21 | 60 min |
| Season 2 | Episode 3 | Little Girl Lost | 2011-08-28 | 60 min |
| Season 2 | Episode 4 | Who Wanted Them Dead? | 2011-09-04 | 60 min |
| Season 2 | Episode 5 | Hiding in Plain Sight | 2011-09-11 | 60 min |
| Season 2 | Episode 6 | Terror in Gulfport | 2011-09-18 | 60 min |
| Season 2 | Episode 7 | Where's Becky | 2011-09-25 | 60 min |
| Season 2 | Episode 8 | Blood on the Badge | 2011-10-02 | 60 min |
| Season 2 | Episode 9 | Cop Killer | 2011-10-09 | 60 min |
| Season 2 | Episode 10 | Death of a Freshman | 2011-10-16 | 60 min |
| Season 2 | Episode 11 | Murder in the Mansion | 2011-10-23 | 60 min |
| Season 3 | Episode 1 | The Perfect Family | 2012-02-26 | 60 min |
| Season 3 | Episode 2 | A Monstrous Act | 2012-03-04 | 60 min |
| Season 3 | Episode 3 | Murder on Miguel Lane | 2012-03-11 | 60 min |
| Season 3 | Episode 4 | Innocent Bystander | 2012-03-25 | 60 min |
| Season 3 | Episode 5 | Clairemont Killer | 2012-04-01 | 60 min |
| Season 3 | Episode 6 | Left for Dead | 2012-04-08 | 60 min |
| Season 3 | Episode 7 | Murderous Intentions | 2012-04-15 | 60 min |
| Season 3 | Episode 8 | Death of an Angel | 2012-04-22 | 60 min |
| Season 3 | Episode 9 | Hotel Homicides | 2012-04-29 | 60 min |
| Season 3 | Episode 10 | Elemental Murder | 2012-05-06 | 60 min |
| Season 3 | Episode 11 | Deadly Denial | 2012-05-13 | 60 min |
| Season 3 | Episode 12 | Random Act of Madness | 2012-05-20 | 60 min |
| Season 3 | Episode 13 | Bathtub Killer | 2012-05-27 | 60 min |
| Season 4 | Episode 1 | Pure Evil | 2012-09-09 | 60 min |
| Season 4 | Episode 2 | The Perfect Suspect | 2012-09-16 | 60 min |
| Season 4 | Episode 3 | Wolf in Sheep's Clothing | 2012-09-23 | 60 min |
| Season 4 | Episode 4 | Blood Trail | 2012-09-30 | 60 min |
| Season 4 | Episode 5 | Mother's Day Murders | 2012-10-07 | 60 min |
| Season 4 | Episode 6 | Gruesome Discovery | 2012-10-14 | 60 min |
| Season 4 | Episode 7 | A Bike Ride to Murder | 2012-10-21 | 60 min |
| Season 4 | Episode 8 | Murder on the Menu | 2012-10-28 | 60 min |
| Season 4 | Episode 9 | Triple Threat | 2012-11-11 | 60 min |
| Season 4 | Episode 10 | City Under Siege | 2012-11-18 | 60 min |
| Season 4 | Episode 11 | Killings in Kentucky | 2012-11-25 | 60 min |
| Season 4 | Episode 12 | No Mercy | 2012-12-02 | 60 min |
| Season 4 | Episode 13 | Maritime Murder | 2012-12-09 | 60 min |
| Season 5 | Episode 1 | Deadly Forest | 2013-03-31 | 60 min |
| Season 5 | Episode 2 | Christmas Mourning | 2013-04-07 | 60 min |
| Season 5 | Episode 3 | Burning Fury | 2013-04-14 | 60 min |
| Season 5 | Episode 4 | Driven to Murder | 2013-04-21 | 60 min |
| Season 5 | Episode 5 | Phantom Predator | 2013-04-28 | 60 min |
| Season 5 | Episode 6 | Deathbed | 2012-05-12 | 60 min |
| Season 5 | Episode 7 | The Deacon's Demise | 2013-05-19 | 60 min |
| Season 5 | Episode 8 | Sin City Slaying | 2013-05-26 | 60 min |
| Season 5 | Episode 9 | Manufacturing Murder | 2013-06-02 | 60 min |
| Season 5 | Episode 10 | Little Boy Lost | 2013-06-09 | 60 min |
| Season 5 | Episode 11 | When Evil Strikes | 2013-06-16 | 60 min |
| Season 5 | Episode 12 | The Last Resort | 2013-06-23 | 60 min |
| Season 5 | Episode 13 | Dangerous Fortune | 2013-06-30 | 60 min |
| Season 6 | Episode 1 | Vanished in Reno | 2014-01-12 | 60 min |
| Season 6 | Episode 2 | High School Homicide | 2014-01-19 | 60 min |
| Season 6 | Episode 3 | Brute Force | 2014-01-26 | 60 min |
| Season 6 | Episode 4 | Murder in Room 348 | 2014-02-09 | 60 min |
| Season 6 | Episode 5 | Wicked Impulse | 2014-02-16 | 60 min |
| Season 6 | Episode 6 | Death of Innocence | 2014-02-23 | 60 min |
| Season 6 | Episode 7 | Hometown Homicide | 2014-03-02 | 60 min |
| Season 6 | Episode 8 | Stone Cold Killer | 2014-03-09 | 60 min |
| Season 6 | Episode 9 | Blood in the Water | 2014-03-16 | 60 min |
| Season 6 | Episode 10 | Sinister Secret | 2014-03-23 | 60 min |
| Season 6 | Episode 11 | Dead End Trail | 2014-03-30 | 60 min |
| Season 6 | Episode 12 | Nightclub Nightmare | 2014-04-13 | 60 min |
| Season 6 | Episode 13 | Death Comes Calling | 2014-04-20 | 60 min |
| Season 7 | Episode 1 | Deadly Desire | 2014-01-04 | 60 min |
| Season 7 | Episode 2 | Last Dance | 2015-01-11 | 60 min |
| Season 7 | Episode 3 | No Good Deed | 2015-01-18 | 60 min |
| Season 7 | Episode 4 | Deadly Accusation | 2015-01-25 | 60 min |
| Season 7 | Episode 5 | Death and Taxes | 2015-02-08 | 60 min |
| Season 7 | Episode 6 | Murder in the Mirror | 2015-02-15 | 60 min |
| Season 7 | Episode 7 | An Eye for Murder | 2015-02-22 | 60 min |
| Season 7 | Episode 8 | Absent Teacher | 2015-03-01 | 60 min |
| Season 7 | Episode 9 | Left Alone | 2015-03-08 | 60 min |
| Season 7 | Episode 10 | Flames in Paradise | 2015-03-15 | 60 min |
| Season 7 | Episode 11 | Nightmare Field | 2015-03-22 | 60 min |
| Season 7 | Episode 12 | Little Girl Gone | 2015-03-29 | 60 min |
| Season 7 | Episode 13 | Barefoot Homicide | 2015-04-05 | 60 min |
| Season 8 | Episode 1 | New Year's Evil | 2016-01-10 | 60 min |
| Season 8 | Episode 2 | Silent Night | 2016-01-17 | 60 min |
| Season 8 | Episode 3 | Ashes to Ashes | 2016-01-24 | 60 min |
| Season 8 | Episode 4 | Vicious Voyeur | 2016-01-31 | 60 min |
| Season 8 | Episode 5 | Drive With Danger | 2016-02-14 | 60 min |
| Season 8 | Episode 6 | Knives and Lies | 2016-02-21 | 60 min |
| Season 8 | Episode 7 | Last Curtain Call | 2016-02-28 | 60 min |
| Season 8 | Episode 8 | Murder Down Memory Lane | 2016-03-06 | 60 min |
| Season 8 | Episode 9 | Housebound Homicide | 2016-03-13 | 60 min |
| Season 8 | Episode 10 | Kill Now, Pay Later | 2016-03-20 | 60 min |
| Season 8 | Episode 11 | End of the Line | 2016-03-27 | 60 min |
| Season 8 | Episode 12 | Final Lesson | 2016-04-03 | 60 min |
| Season 8 | Episode 13 | Stone Cold Fusion | 2016-04-10 | 60 min |
| Season 9 | Episode 1 | Field of Nightmares | 2017-10-04 | 60 min |
| Season 9 | Episode 2 | Snake in the Grass | 2017-10-11 | 60 min |
| Season 9 | Episode 3 | Dance With the Devil | 2017-10-18 | 60 min |
| Season 9 | Episode 4 | Nightcrawler | 2017-10-25 | 60 min |
| Season 9 | Episode 5 | Final Curtain | 2017-11-01 | 60 min |
| Season 9 | Episode 6 | Devil Went Down to Georgia | 2017-11-08 | 60 min |
| Season 9 | Episode 7 | Terror Under the Moonlight | 2017-11-15 | 60 min |
| Season 9 | Episode 8 | Tangled Up in Red | 2017-11-22 | 60 min |
| Season 9 | Episode 9 | A Taste for Blood | 2017-12-06 | 60 min |
| Season 9 | Episode 10 | Down to the Wire | 2017-12-13 | 60 min |
| Season 9 | Episode 11 | Fatal Impact | 2017-12-20 | 60 min |
| Season 9 | Episode 12 | Shattered Dreams | 2017-12-27 | 60 min |
| Season 9 | Episode 13 | Forget Me Not | 2018-01-10 | 60 min |