Season 9 Episode 19

Director Vance's brother-in-law is the lead suspect when Gibbs (Mark Harmon, right) and the NCIS team investigate the murder of a petty officer. Pictured left to right: Cote de Pablo, Michael Weatherly, Sean Murray, David McCallum (kneeling) and Mark Harmon. Photo: Cliff Lipson/CBS ©2012 CBS Broadcasting Inc. All Rights Reserved.

Director Vance's brother-in-law is the lead suspect when Gibbs (Mark Harmon, right) and the NCIS team investigate the murder of a petty officer. Pictured left to right: Cote de Pablo, Michael Weatherly, Sean Murray and Mark Harmon. Photo: Cliff Lipson/CBS ©2012 CBS Broadcasting Inc. All Rights Reserved.

Director Vance's brother-in-law is the lead suspect when Gibbs (Mark Harmon, pictured) and the NCIS team investigate the murder of a petty officer. Photo: Cliff Lipson/CBS ©2012 CBS Broadcasting Inc. All Rights Reserved.

Director Vance's (Rocky Carroll, pictured standing center) brother-in-law (Jocko Sims, pictured seated right) is the lead suspect when Gibbs and the NCIS team investigate the murder of a petty officer. Pictured left to right: Kiara Muhammad, Akinsola Aribo, Rocky Carroll, Paula Newsome and Jocko Sims. Photo: Cliff Lipson/CBS ©2012 CBS Broadcasting Inc. All Rights Reserved.

Director Vance's (Rocky Carroll, pictured) brother-in-law is the lead suspect when Gibbs and the NCIS team investigate the murder of a petty officer, on NCIS

Director Vance's brother-in-law is the lead suspect when Gibbs (Mark Harmon) and the NCIS team investigate the murder of a petty officer. Pictured left to right: Cote de Pablo and Michael Weatherly. Photo: Cliff Lipson/CBS ©2012 CBS Broadcasting Inc. All Rights Reserved.

Director Vance's brother-in-law is the lead suspect when Gibbs (Mark Harmon, right) and the NCIS team investigate the murder of a petty officer. Pictured left to right: Michael Weatherly, Cote de Pablo and Mark Harmon. Photo: Cliff Lipson/CBS ©2012 CBS Broadcasting Inc. All Rights Reserved.

Director Vance's brother-in-law is the lead suspect when Gibbs and the NCIS team investigate the murder of a petty officer. Pictured: David McCallum Photo: Cliff Lipson/CBS ©2012 CBS Broadcasting Inc. All Rights Reserved.