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date (day) time network episode title
12/19/13 (Th.)10:30 PMID(#302) The Perfect Husband (R)
12/19/13 (Th.)10:00 PMID(#308) The Kensington Strangler
12/12/13 (Th.)10:30 PMID(#301) The Family Man (R)
12/12/13 (Th.)10:00 PMID(#307) Black Widow of Texas
12/5/13 (Th.)10:30 PMID(#203) House of Horrors (R)
12/5/13 (Th.)10:00 PMID(#306) Secret Agent Dad
11/21/13 (Th.)10:30 PMID(#201) Evil in First Class (R)
11/21/13 (Th.)10:00 PMID(#305) Doctor of Deceit
11/14/13 (Th.)10:30 PMID(#304) Civil War Serial Killer
11/14/13 (Th.)10:00 PMID(#303) Under the Melting Snow
11/7/13 (Th.)10:30 PMID(#302) The Perfect Husband
11/7/13 (Th.)10:00 PMID(#301) The Family Man
2/8/13 (Fr.)9:30 PMID(#204) Mother Knows Best (R)
2/8/13 (Fr.)9:00 PMID(#208) Against All Odds (R)
12/17/12 (Mo.)9:30 PMID(#201) Evil in First Class (R)
11/28/12 (We.)10:30 PMID(#205) Buried Secrets (R)
11/28/12 (We.)10:00 PMID(#208) Against All Odds
11/14/12 (We.)10:30 PMID(#111) Stairway to Hell (R)
11/14/12 (We.)10:00 PMID(#207) The Cleveland Strangler
11/7/12 (We.)10:30 PMID(#115) Life on the Run (R)
11/7/12 (We.)10:00 PMID(#206) Twisted Faith
10/31/12 (We.)10:30 PMID(#114) The Ultimate Betrayal (R)
10/31/12 (We.)10:00 PMID(#205) Buried Secrets
10/24/12 (We.)10:30 PMID(#204) Mother Knows Best
10/24/12 (We.)10:00 PMID(#203) House of Horrors
10/17/12 (We.)10:30 PMID(#202) Unfriendly Fire
10/17/12 (We.)10:00 PMID(#201) Evil in First Class
12/28/11 (We.)10:00 PMID(#116) Looks Can Kill
12/21/11 (We.)10:00 PMID(#115) Life on the Run
12/14/11 (We.)10:00 PMID(#114) The Ultimate Betrayal
12/7/11 (We.)10:00 PMID(#113) Devil in Disguise
11/30/11 (We.)10:00 PMID(#112) A Very Unusual Robber
11/16/11 (We.)10:00 PMID(#111) Stairway to Hell
11/9/11 (We.)10:00 PMID(#110) Stalking Evil
11/2/11 (We.)10:00 PMID(#109) Daddy Dearest
10/26/11 (We.)10:00 PMID(#108) A Twisted Mind
10/19/11 (We.)10:00 PMID(#107) A Serial Killer in the Family
7/6/11 (We.)10:00 PMID(#106) Devil of a Husband
6/29/11 (We.)10:00 PMID(#105) In Bed with the Devil
6/22/11 (We.)10:30 PMID(#104) The Wily Widower
6/22/11 (We.)10:00 PMID(#103) Devil of a Dad
6/15/11 (We.)10:30 PMID(#102) Devil in a Pinstripe Suit
6/15/11 (We.)10:00 PMID(#101) Poisonous Love

6/15/11 - 12/19/13
canceled/ended (2013-2014 season)
completed airing its current season
3 (32 episodes, 0 of which have yet to air)
a show on hiatus for longer than 12 months - without any news about its future - is assumed to be canceled
(from Investigation Discovery's press release, April 2013) DEVIL YOU KNOW delves into the secret lives of men and women who masquerade as law-abiding citizens but, behind the charade, are hiding deadly intentions from their loved ones. As each story unfolds, family and friends give first-hand accounts of the unimaginable betrayal that left them in the dark. These harrowing personal testimonials take viewers on a twisted journey as our witnesses wrestle with the demons and devils they have come to know all too well.
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· reality (all)
· reality (documentary)
· no information is available