Betrayal (S18E11)

A psychiatrist is found shot to death in his office, and Detectives Ed Green (Jesse L. Martin) and Cyrus Lupo (Jeremy Sisto) initially suspect one of his young patients. Clues lead the detectives to the doctor's jealous and much younger wife, Catherine (guest star Moira Kelly). The pressures of the case drive Catherine to admit her troubled past leading to his murder. The prosecuting team, Michael Cutter (Linus Roache) and Connie Rubirosa (Alana De La Garza) are then faced with the daunting task of convincing the jury that Catherine's troubled youth is no excuse for murder. (iTunes)