NCIS boss Leroy Jethro Gibbs will head down south for the show's spin-off to deal with an unsolved murder.

Gibbs will reunite with his former colleague, Special Agent Dwayne Cassius Pride, after a body washes ashore in New Orleans, according to the synopsis. The corpse is identified as Congressman Dan McLane, who is also a former NCIS agent.

The two NCIS offices will work together with the FBI to determine whether or not the Congressman was killed for political reasons or because of a famous past case.

McLane is known for arresting a serial killer who targeted military and public workers, also recognized as the Privileged Killer.

The two-part episode of the NCIS spin-off will air this month and executive producer Gary Glasberg explained what makes the potential new series unique.

"One of the really interesting things I'm picking up on is, a lot of times on our show, especially when it's a case-related scene, we will put it in our squad-room set. Here, all I want to do is see people walking. I want them out on the street," Glasberg told The Associated Press. "I want the city to be as much a part of those conversations as anything. To be able to do that walk-and-talk through the city is exciting for me. And it's different. And that kind of difference is what I'm trying for."

The two episodes of NCIS: New Orleans, titled "Crescent City Part 1" and "Crescent City Part 2," will air March 25 and April 1 at 8 p.m. on CBS.

The show will star Scott Bakula as Special Agent Dwayne Cassius Price, Lucas Black as Special Agent Christopher Lasalle, Zoe McLellan as NCIS Special Agent Meredith "Merri" Brody and CCH Pounder as Jefferson Parish Coroner Doctor Loretta Wade.

Tags: NCIS New Orleans