The two-part "NCIS" Season 23 opener "Prodigal Son" introduces viewers to the sister of NCIS Supervisory Special Agent Alden Parker (Gary Cole), who has gone rogue in his quest for revenge against his father's killer, Carla Marino (Rebecca De Mornay). Alden's sister Harriet happens to be the Vice Admiral in charge of the fleet ordered to bring Alden in by any means necessary, putting the siblings on a collision course as they both grieve the loss of their father, Roman Parker (Francis X. McCarthy), in different ways.

"Prodigal Son, Part II" contains a number of emotional moments between Alden and Harriet Parker, who is played by Nancy Travis. The veteran actress is no stranger to crime dramas, having plied her trade in the likes of "Fallen Angels," "Numb3rs," and "Law & Order: Special Vic

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