Judy Wagrowski is not your average accountant. She was once hired to keep track of the earnings in an illegal numbers racket in Pittsburgh, PA. After being raided by the feds, Wagrowski was turned over to WitSec and Mary becomes frustrated while trying to adjust to Judy's condition.
Unable to lie and struggling with body language, Judy is given a job as an accountant's assistant while she waits to testify in the federal case. Mary walks a fine line as she instructs Judy to lie about her identity while in witness protection but to tell the truth in the courtroom once she's called upon to testify against her former boss, Larry Silvers.
Marshall and Stan have their hands full as well when a current WitSec case becomes worried about her status as an immigrant in the States. Stan puts the pressure on the I.C.E. to renew her status, but he finds out that she may be involved in criminal activity.
Meanwhile, Mary's sister joins their half-brother at gambler's anonymous meetings.