Season 2 - Episode Guide

A witness's death pulls Mary out of administrative leave in the second-season premiere. While working on the case, she also must cope with her post-traumatic stress disorder.

Mary tries to secure the testimony of a drug mastermind who controls his severe anxiety by getting high.

A witness has trouble handling her three wild kids, so Mary steps in to help.

A witness is injured and trapped in a building collapse, leaving him vulnerable to a sniper waiting nearby.

An Orthodox Jewish witness realizes he's being followed by a strange man. The witness's wife, meanwhile, refuses to enter the witness-protection program.

Stan is implicated in the murder of his first witness after his badge is found with the witness's bones. As Mary and Marshall investigate, they learn about a 20-year-old love triangle.

After the engineer of a collapsed bridge is targeted by the families of those who died in the accident, he enters WITSEC and tries to prove he's not responsible for the collapse.

Mary and Marshall suspect that a new witness may be involved in a string of murders and the stabbing of Mary's friend. The pair try to determine if the witness is truly the killer before another victim surfaces.

Brandi is charged with murder and drug trafficking by Agt. O'Connor, leaving Mary to try to uncover the reasons behind his vendetta against her sister.

Mary searches for the missing son of a witness who won't testify unless he's able to visit his child.

A witness's teen daughter becomes involved in a reckless romance. Elsewhere, Raphael's mother visits and begins planning an engagement party without Mary's consent.

Mary shares her expertise with a film crew making a training video for U.S. Marshals. Elsewhere, Marshall makes arrangements for an elderly mobster in WITSEC to go to his son's funeral.

A counterfeiter witness is implicated in a murder. Mary and Marshall become suspicious of the clues, which seem fake, and wonder if there's a deeper conspiracy at hand.

A Wall Street investor hides out in WITSEC after revealing his boss's fraud. To gain protection, he gives up his fortune, which proves inconvenient when a ransom from his past needs to be paid.

A Latina political activist hides in WITSEC with help from the U.S. government, but the arrangement soon sours when she moves to her new home.