The best episode written by Brian Dietzen is "The Helpers", rated 8.5/10 from 2 user votes. It was "directed by Diana Valentine". "The Helpers" aired on 2/28/2022 and is rated 1.2 point(s) higher than their second highest rated, "Old Wounds".
While investigating the death of an intruder at Quantico, Jimmy and Kasie are exposed to a deadly biotoxin; the NCIS team calls on Dr. Carol Wilson for help as they race to find the antidote; Torres tries to distract Jimmy's daughter.
Director: Diana Valentine
Writer: Brian Dietzen
Parker grapples with his emotions when a conman from his past turns up as a prime suspect in the murder of a navy officer transporting millions of dollars’ worth of opioids.
Director: Diana Valentine
Writer: Brian Dietzen
As NCIS mourns the loss of Ducky, the agents find comfort in working on one of his unfinished cases involving a woman whose father was dishonorably discharged from the Marines.
Director: Michael Zinberg
Writer: Brian Dietzen