NCIS: Los Angeles season 12 episode 10 is still a few weeks away from airing but CBS has already shared some details on what's coming for certain characters. Sam Hanna (LL Cool J) will have his own mission, which seems to be one of the biggest storylines yet.

The title of NCIS: Los Angeles season 12 episode 10 is "The Frogman's Daughter." This is a reference to Sam's latest pursuit, which is finding his daughter, Kam (Kayla Smith). He is going to do whatever he can to track her down and locate her whereabouts.

Kam was kidnapped after leading citywide protests. This prompted Sam to go on a search and rescue mission, and he will stop at nothing to find his daughter. It remains to be seen who's responsible for the kidnapping incident. But, he or she might be tied to what Kam's protest is all about.

Moreover, there is a concern when it comes to her condition. The kidnappers might be torturing her, making Sam even more desperate to save Kam. Even though his daughter wasn't present for quite some time, she remains the most important person in his life.

Sam has gone through a lot in the past, and he already lost his wife, Michelle (Aunjanue Ellis). Now, he's going to do everything to save his daughter. If he rescues Kam, their relationship as father and daughter might be further explored.

As for what else is coming in NCIS: Los Angeles season 12 episode 10, Marty Deeks (Eric Christian Olsen) will be rejoining the department. It can be noted that he was dismissed from his job, but he could find a way to get back. Perhaps, he'll be working alongside the team and going on missions.

Deeks has been with them over the past years -- even if he had a different title before. Now that he rejoins NCIS, this is an opportunity for him to show his skills out in the field. He's an official agent, and he'll be taking part in doing the responsibilities of having the position.

Meanwhile, G. Callen (Chris O'Donnell) is dealing with his personal issue in NCIS: Los Angeles season 12 episode 10. He'll be searching for answers about Anna Kolcheck (Bar Paly). While he's helping Sam find his daughter, he's also on a mission to track where the woman he loves is.

In some previous episodes, Callen was planning to propose to Anna. He's certain that he wanted to spend the next chapter of his life with her. However, some unforeseen events transpired, and he's desperate for some answers. They have been through a lot, and there might be a reason why Anna has gone missing.

NCIS: Los Angeles season 12 episode 10 airs on Sunday, February 14, on CBS.