After a priest witnesses the murder of a parishioner, he will have to give up his special vocation in order to enter WITSEC.

Mary keeps an eye on a teen witness whose separated parents are too distracted by their own issues to pay attention to their daughter. Elsewhere, Marshall thinks a witness may have betrayed his brother; and Brandi tends to Scott after he’s attacked.

A witness with Asperger’s refuses to testify against her friend, frustrating Mary. Elsewhere, Marshall and Stan try to prevent the deportation of a key witness, and Brandi comes clean about her investment plan w

A woman wants to escape from her family, who are heavily involved in organized crime, but a secret from her past puts her eligibility for witness protection in jeopardy. In the face of these obstacles, she turns to Mary for help. Laura San Giacomo guest stars

Seth Mann, a legendary Marshal whose career spans decades and who also happens to be Marshall’s father, comes to Albuquerque to work on Operation Falcon, a nationwide sweep of open warrants. Meanwhile, Brandi returns to Albuquerque with a suspicious story about her disappearance and a surprise guest connected to her past.

The In Plain Sight episode named, “Love’s Faber Lost” is set to have Steven Weber return as guest star to help Mary work with the FBI about a mob-related witness.

Mary helps a paroled witness acclimate to life on the outside; Marshall helps out when one of Mary’s witnesses becomes the victim of a revenge plot

Mary’s new witness falls in love for the first time; Mary must stop her witness from taking out his pain in the form of an explosive device.

An FBI informant refuses Witsec protection and gets himself in a heap of trouble; Stan works with a witness suffering from pugilistic dementia

A witness against a weapons trafficker wakes up from a three-year coma.