Season 4

Mary uses a thief to catch a thief when she asks a witness to consult on a crime in order to exonerate Brandi of grand theft auto.

Mary's paranoid witness wants to reconnect with his son.

Mary is caught between a witness and a suspect.

A beauty pageant queen finds out that she's spent most of her life in witness protection.

Mary works with an unapologetic con artist.

An Amish witness comes into the program and must learn to adapt.

A terminally ill father wants to reconcile with his children.

Mary plays marriage councilor in order to mediate a WITSEC divorce. Not only must she reconcile a stubborn witness, but also thousands of years of Hindu tradition, in order to save the case and keep a family out of danger.

Mary gets a WITSEC two-fer, when a witness is forced to enter the program after being mistaken for his "evil" twin brother. Not only must she protect the pair from their enemies, but also from each other.

Marshall and Stan contend with a rock-star witness and her controlling mother while Mary is away on a WITSEC-mandated road trip.

Mary helps protect a guilt-ridden Army veteran; Marshall & Abigail consider the next step.

Mary protects a courtesan from the gangster father of her baby.

Mary must protect her least favorite witnesses on the day of her sister's wedding.