U.S. Marshal Mary Shannon must hunt down witnesses for federal cases in the witness protection program while also managing a rather dysfunctional family and her own personal life.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Pilot | 2008-06-01 | 120 min |
| Season 1 | Episode 2 | Hoosier Daddy | 2008-06-08 | 60 min |
| Season 1 | Episode 3 | Never the Bride | 2008-06-15 | 60 min |
| Season 1 | Episode 4 | Trojan Horst | 2008-06-22 | 60 min |
| Season 1 | Episode 5 | Who Shot Jay Arnstein? | 2008-06-29 | 60 min |
| Season 1 | Episode 6 | High Priced Spread | 2008-07-06 | 60 min |
| Season 1 | Episode 7 | Iris Doesn't Live Here Anymore | 2008-07-13 | 60 min |
| Season 1 | Episode 8 | Don of the Dead | 2008-07-20 | 60 min |
| Season 1 | Episode 9 | Good Cop, Dead Cop | 2008-07-27 | 60 min |
| Season 1 | Episode 10 | To Serge with Love | 2008-08-03 | 60 min |
| Season 1 | Episode 11 | Stan by Me | 2008-08-10 | 60 min |
| Season 1 | Episode 12 | A Fine Meth | 2008-08-17 | 60 min |
| Season 2 | Episode 1 | Gilted Lily | 2009-04-19 | 60 min |
| Season 2 | Episode 2 | In My Humboldt Opinion | 2009-04-26 | 60 min |
| Season 2 | Episode 3 | A Stand-Up Triple | 2009-05-03 | 60 min |
| Season 2 | Episode 4 | Rubble with a Cause | 2009-05-10 | 60 min |
| Season 2 | Episode 5 | Aguna Matatala | 2009-05-17 | 60 min |
| Season 2 | Episode 6 | One Night Stan | 2009-05-31 | 60 min |
| Season 2 | Episode 7 | Duplicate Bridge | 2009-06-07 | 60 min |
| Season 2 | Episode 8 | A Frond in Need | 2009-06-14 | 60 min |
| Season 2 | Episode 9 | Who's Bugging Mary? | 2009-06-21 | 60 min |
| Season 2 | Episode 10 | Miles to Go | 2009-06-28 | 60 min |
| Season 2 | Episode 11 | Jailbait | 2009-07-12 | 60 min |
| Season 2 | Episode 12 | Training Video | 2009-07-19 | 60 min |
| Season 2 | Episode 13 | Let's Get It Ahn | 2009-07-26 | 60 min |
| Season 2 | Episode 14 | Once a Ponzi Time | 2009-08-02 | 60 min |
| Season 2 | Episode 15 | Don't Cry for Me Albuquerque | 2009-08-09 | 60 min |
| Season 3 | Episode 1 | Father Goes West | 2010-03-31 | 60 min |
| Season 3 | Episode 2 | When Mary Met Marshall | 2010-04-07 | 60 min |
| Season 3 | Episode 3 | Coma Chameleon | 2010-04-14 | 60 min |
| Season 3 | Episode 4 | Whistle Stop | 2010-04-21 | 60 min |
| Season 3 | Episode 5 | Fish or Cut Betta | 2010-04-28 | 60 min |
| Season 3 | Episode 6 | No Clemency for Old Men | 2010-05-05 | 60 min |
| Season 3 | Episode 7 | Love's Faber Lost | 2010-05-12 | 60 min |
| Season 3 | Episode 8 | Son of Mann | 2010-05-19 | 60 min |
| Season 3 | Episode 9 | Death Becomes Her | 2010-06-02 | 60 min |
| Season 3 | Episode 10 | Her Days Are Numbered | 2010-06-09 | 60 min |
| Season 3 | Episode 11 | The Born Identity | 2010-06-16 | 60 min |
| Season 3 | Episode 12 | WITSEC Stepmother | 2010-06-23 | 60 min |
| Season 3 | Episode 13 | A Priest Walks Into a Bar | 2010-06-30 | 60 min |
| Season 4 | Episode 1 | The Art of the Steal | 2011-05-01 | 60 min |
| Season 4 | Episode 2 | Crazy Like a Witness | 2011-05-08 | 60 min |
| Season 4 | Episode 3 | Love in the Time of Colorado | 2011-05-15 | 60 min |
| Season 4 | Episode 4 | Meet the Shannons | 2011-05-22 | 60 min |
| Season 4 | Episode 5 | Second Crime Around | 2011-06-05 | 60 min |
| Season 4 | Episode 6 | Something A-Mish | 2011-06-12 | 60 min |
| Season 4 | Episode 7 | I'm a Liver Not a Fighter | 2011-06-19 | 60 min |
| Season 4 | Episode 8 | Kumar vs. Kumar | 2011-06-26 | 60 min |
| Season 4 | Episode 9 | The Rolling Stones | 2011-07-10 | 60 min |
| Season 4 | Episode 10 | Girls, Interrupted | 2011-07-17 | 60 min |
| Season 4 | Episode 11 | Provo-Cation | 2011-07-24 | 60 min |
| Season 4 | Episode 12 | A Womb with a View | 2011-07-31 | 60 min |
| Season 4 | Episode 13 | Something Borrowed, Something Blew Up | 2011-08-07 | 60 min |
| Season 5 | Episode 1 | The Anti-Social Network | 2012-03-16 | 60 min |
| Season 5 | Episode 2 | Four Marshalls and a Baby | 2012-03-23 | 60 min |
| Season 5 | Episode 3 | Reservations, I've Got a Few | 2012-03-30 | 60 min |
| Season 5 | Episode 4 | The Merry Wives of WITSEC | 2012-04-06 | 60 min |
| Season 5 | Episode 5 | Drag Me to Hell | 2012-04-13 | 60 min |
| Season 5 | Episode 6 | The Medal of Mary | 2012-04-20 | 60 min |
| Season 5 | Episode 7 | Sacrificial Lam | 2012-04-27 | 60 min |
| Season 5 | Episode 8 | All's Well That Ends | 2012-05-04 | 60 min |
| Directing | Kevin Black | Second Second Assistant Director |
| Production | Paul Stupin | Executive Producer |
| Production | Oscar L. Costo | Producer |
| Production | David Maples | Executive Producer |
