The program explores stories of crime mysteries and secret lives of men and women who are supposedly law-abiding citizens but in reality are people with deadly intentions causing pain to their loved ones. The show interviews members of families and friends of those affected and presents first-hand accounts on lives of people who have been betrayed and hurt by these criminals.
You can now watch The Devil You Know online on the following streaming providers in the United States.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Poisonous Love | 2011-06-15 | 30 min |
| Season 1 | Episode 2 | Devil in a Pinstripe Suit | 2011-06-15 | 30 min |
| Season 1 | Episode 3 | Devil of a Dad | 2011-06-22 | 30 min |
| Season 1 | Episode 4 | The Wily Widower | 2011-06-22 | 30 min |
| Season 1 | Episode 5 | In Bed with the Devil | 2011-06-29 | 30 min |
| Season 1 | Episode 6 | Devil of a Husband | 2011-07-06 | 30 min |
| Season 1 | Episode 7 | A Serial Killer in the Family | 2011-10-19 | 30 min |
| Season 1 | Episode 8 | A Twisted Mind | 2011-10-26 | 30 min |
| Season 1 | Episode 9 | Daddy Dearest | 2011-11-02 | 30 min |
| Season 1 | Episode 10 | Stalking Evil | 2011-11-09 | 30 min |
| Season 1 | Episode 11 | Stairway to Hell | 2011-11-16 | 30 min |
| Season 1 | Episode 12 | A Very Unusual Robber | 2011-11-30 | 30 min |
| Season 1 | Episode 13 | Devil in Disguise | 2011-12-07 | 30 min |
| Season 1 | Episode 14 | The Ultimate Betrayal | 2011-12-14 | 30 min |
| Season 1 | Episode 15 | Life on the Run | 2011-12-21 | 30 min |
| Season 1 | Episode 16 | Looks Can Kill | 2011-12-28 | 30 min |
| Season 2 | Episode 1 | Evil in First Class | 2012-10-17 | 30 min |
| Season 2 | Episode 2 | Unfriendly Fire | 2012-10-17 | 30 min |
| Season 2 | Episode 3 | House of Horrors | 2012-10-24 | 30 min |
| Season 2 | Episode 4 | Mother Knows Best | 2012-10-24 | 30 min |
| Season 2 | Episode 5 | Buried Secrets | 2012-10-31 | 30 min |
| Season 2 | Episode 6 | Twisted Faith | 2012-11-07 | 30 min |
| Season 2 | Episode 7 | The Cleveland Strangler | 2012-11-14 | 30 min |
| Season 2 | Episode 8 | Against All Odds | 2012-11-28 | 30 min |
| Season 3 | Episode 1 | The Family Man | 2013-11-07 | 30 min |
| Season 3 | Episode 2 | The Perfect Husband | 2013-11-07 | 30 min |
| Season 3 | Episode 3 | Under the Melting Snow | 2013-11-14 | 30 min |
| Season 3 | Episode 4 | Civil War Serial Killer | 2013-11-14 | 30 min |
| Season 3 | Episode 5 | Doctor of Deceit | 2013-11-21 | 30 min |
| Season 3 | Episode 6 | Secret Agent Dad | 2013-12-05 | 30 min |
| Season 3 | Episode 7 | Black Widow of Texas | 2013-12-12 | 30 min |
| Season 3 | Episode 8 | The Kensington Strangler | 2013-12-19 | 30 min |