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'NCIS: Los Angeles' season 5 episode 15 preview: You don't want to see him smile

Are you ready to revisit two agents' first case together? That's what's coming up in next week's "NCIS: Los Angeles" episode 515, "Tuhon," for which CBS released a new sneak preview Tuesday, Feb. 18, after this week's rerun.

Promotional photos for 'NCIS: LA' 5x15 "Tuhon"
Promotional photos for 'NCIS: LA' 5x15 "Tuhon"
Neil Jacobs/CBS
'NCIS: Los Angeles' season 5 episode 15 "Tuhon"
Neil Jacobs/CBS

In this next "NCIS: LA" episode, Sam (LL Cool J) and Callen (Chris O'Donnell) head to Mexico to find Tuhon (Danny Trejo), a retired assassin they encountered on their very first case together, but he's now a suspect in the murder of a diplomat. Yes, Danny Trejo is guest starring, and as the photos CBS has already released from this episode show in the slideshow, it looks like he's going to do just fine in this role.

Meanwhile, Peter Cambor, who was seen in the second episode of season, "Impact," helping Sam and Deeks (Eric Christian Olsen) after they were tortured, is back as Nate and working with Deeks back in Los Angeles on the investigation.

And while there are no details about what's going on in Afghanistan in this episode, Erik Palladino (Sabatino) is listed in the guest cast, so the questions about him will likely continue.

The "Tuhon" promo is all about the assassin who was part of the beginning of Sam and Callen's partnership, and it offers a look at him in action. "He won't smile at you until he's figured out how you're going to die," Hetty (Linda Hunt) says of Tuhon. When asked if he ever smiled at her, she replied, "I smiled back." Do you expect anything else from Hetty?

"NCIS: Los Angeles" season 5 airs Tuesdays at 9 p.m. on CBS. What do you think of this episode 15 "Tuhon" promo?

© Meredith Jacobs 2014

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