NCIS: New Orleans season 6 episode 4 is coming next week and, within this episode, fans are going to see a personal mission for Christopher Lasalle. What is this personal mission? Well, it has something to do with what's going on with brother, Cade.

In the synopsis of NCIS: New Orleans season 6 episode 4, titled "Overlooked," Sebastian and Lasalle are traveling to Alabama to search for the latter's missing brother. However, there hasn't been any confirmation whether or not Clayne Crawford, who played Cade, will be coming back to the show.

Despite that, there's still a possibility the character will return in the series, as long as Lasalle finds him. He already admitted he's searching for his brother and made it clear he wanted him to come back. Hence, Crawford's appearance on the show is highly likely.

If ever Cade comes back, there are two options when it comes to his storyline: either he is dead or alive. Right now, however, it's still hard to predict the character's future since he hasn't been on the CBS show for quite some time now.

Meanwhile, Lasalle's personal mission is, perhaps, one of the most important things in his arc. He hasn't had any big stories, just like this one, and this could possibly create long-term implications for his part. This is a great opportunity for the character to explore painful stuff from his past.

The relationship between these two brothers will probably be explored in NCIS: New Orleans season 6 episode 4. Hopefully, Lasalle could find answers to some of his questions, as well as what's going on with his family. He really wanted to know his brother's whereabouts, and he's worried someone is going after them.

But, then, the decision regarding Crawford's potential return is still up to what writers. The actor hasn't been on the TV network following his departure in Lethal Weapon over a year ago, but he did appear in Hulu's Into the Dark.

Meanwhile, aside from Lasalle's personal mission, NCIS: New Orleans will also see the NCIS team uncovering a sinister plot by a private detention center contracted by the government to house undocumented immigrants.

This episode could explore several issues that are generating headlines, particularly when it comes to undocumented immigrants, as well as detention centers. As a whole, next week's episode could also feature other characters getting a spotlight.

NCIS: New Orleans season 6 episode 4 will air on Tuesday, October 15, on CBS.