Crossing The Line is the 15th episode of NCIS Season 16 and also the 369th episode of the entire NCIS series.
The NCIS team investigates a man overboard fatality from a Navy destroyer at sea with the investigation soon revealing that his death was due to consuming an energy drink that was laced with drugs while Torres is frustrated with Vance's assignment to mentor three high school students.
- It is revealed that Max Girard is the son of Ed Girard who was killed in the Navy Yard Bombing caused by Harper Dearing.
- In addition, it is revealed that Jacqueline Sloane's current office formerly belonged to Ed Girard prior to the bombing.
- It's revealed that six years have passed since the Navy Yard Bombing.
|Leroy Jethro Gibbs||Mark Harmon||Special Agent in charge of the NCIS Major Case Response Team.|
|Timothy McGee||Sean Murray||Senior Special Agent and second-in command of the NCIS Major Case Response Team.|
|Nicholas Torres||Wilmer Valderrama||Special Agent for the NCIS Major Case Response Team.|
|Eleanor Bishop||Emily Wickersham||Special Agent for the NCIS Major Case Response Team|
|Jacqueline Sloane||Maria Bello||NCIS Forensic Psychologist|
|James Palmer||Brian Dietzen||Medical Examiner for the Major Case Response Team|
|Kasie Hines||Diona Reasonover||NCIS Forensic Specialist; Abby's replacement|
|Leon Vance||Rocky Carroll||Director of NCIS|
|Donald Mallard||David McCallum||Chief Medical Examiner for the NCIS Major Case Response Team. Despite being credited, McCallum doesn't appear in this episode.|
|Ian Rackham||Sean Patrick Thomas||Navy Commander.|
|Max Girard||Sloane Morgan Siegel|
|Eric Brown||Griffin Freeman||Navy Petty Officer Second Class.|
|Blake (Crossing The Line)||Cedric Begley|
|Kendra Allston||Teri Wyble|
|Andrew Townsley||Steven Krueger|
|Unnamed Sailor||Chaunsi Heatley|
|Unnamed Navy Chief 1||Charles A. Remley, III|
|Unnamed Navy Chief 2||Jennifer May|