If you thought that this week's episode of NCIS ("Sloane's" emotional reunion with her daughter) was a great watch, then get ready for next week's episode 19 (titled "Blarney"), in which two popular characters face mortal peril!

Brian Dietzen's character "Jimmy Palmer" really(!) needs an assistant...

NCIS Season 17 Episode 19: "Jimmy" and "Kasie" are hostages

The teaser trailer for the upcoming episode shows "Jimmy Palmer" (Brian Dietzen) and "Kasie Hines" (Diona Reasonover) casually eating at a diner, but their lunch quickly turns into a situation that these two characters are not remotely used to.

The diner becomes the site of a robbery that turns into a hostage situation and it looks like "Jimmy" and "Kasie" won't be able to save the day. "Gibbs" (Mark Harmon), "Bishop" (Emily Wickersham) and "Torres" (Wilmer Valderrama) arrive on the scene and "Gibbs" makes contact with the robbers.

NCIS Season 17: Christopher Lloyd To Guest Star In New Episode!!!

He tells the man in charge "We want to get them out alive" while "Bishop" let's him know that it might not be up to them how the ordeal ends...! Will "Jimmy" and "Kasie" make it out alive? The last moment of the trailer is a single shot fired.

NCIS Season 17 Episode 19: Watch the trailer!

Was it one of the snipers taking down the main robber or will we have to say goodbye to either "Jimmy" or "Kasie"?

The new episode of NCIS (Season 17, Episode 19, "Blarney") airs on Tuesday, March 31, at 8pm (7 central) on CBS!