Mary returns from maternity leave and encounters a new dynamic at the office in the Season 5 premiere. Elsewhere, Mary is assigned to protect a witness who could destroy a powerful secret society.

Cast: Mary McCormack, Frederick Weller, Paul Ben-Victor, Rachel Boston, Lesley Ann Warren, Tangie Ambrose, Bryan Callen, Ali Marsh, J. Grant Albrecht, Rebecca Wisocky, Joseph Fuhr, Michael Grant Terry, Todd Gable, Stafford Douglas