Episode 312, "Penitence" Tomorrow 10|9c
SEASON 4, EPISODE 409 - The team searches for Jack's friend Max Cassidy, a longtime FBI agent who disappears after leaving an emotional message on the answering machine of his wife, FBI agent Anne Cassidy (Academy Award nominee MARY ELIZABETH MASTRANTONIO - "The Color of Money"), about the murder of his partner, Jimmy Haggerty. The squad investigates whether the industrial espionage case that Max and Jimmy were working is connected to Jimmy's murder and if Max is now a victim of Jimmy's killer. As a safety precaution, Max had attempted to pull Jimmy from the case, but Jimmy threatened to tell Anne a secret about Max if removed. Now, Jack and the others must consider Anne a possible suspect in her husband's disappearance.