No Clemency for Old Men

Plot:

When a hardened bank robber who's been in Witsec in prison for decades is finally paroled, it falls to Mary to help him acclimate to life on the outside and keep him from falling back into a life of crime. Meanwhile, when one of Mary's other witnesses becomes the victim of a revenge plot, Marshall steps in to help out -- only to find himself in a predicament when the witness prefers him to Mary.