NCIS: Los Angeles' Callen sure knows how to pick the most dangerous cases.

Do Deeks & Kensi Have A Bright Future On 'NCIS: LA'? Daniela Ruah & Eric Christian Olsen Talk Densi

The Office of Special Projects agent will be undercover in a mailroom during "Spiral," but TV Line reports that his seemingly innocuous cover will be interrupted when terrorists take control of the skyscraper.

To make matters worse for Callen's (Chris O'Donnell) team, the entire building will be rigged to blow.

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Penned by Dave Kalstein, the explosive episode will be chock full of action. From Deeks' (Eric Christian Oslen) dizzying stunts to rooftop helicopters, executive producer John Peter Kousakis promises "thrills and suspense."

Director Larry Teng posted a photo of Deeks dangling out a 16th story window (see above), but the LAPD Detective won't be the only one giving viewers a touch of vertigo.

"#NCISLA stunts. High fall," Teng tweeted alongside an empty elevator shaft, presumably one that will have at least one agent climbing up the inside.

"Spiral" is expected to air as the 11th episode of season 6.

Find out more when NCIS: LA airs Mondays at 10 p.m. ET on CBS. Click the video below to see a preview for the series' next episode, "Traitor."

Tags: NCIS: LA NCIS: Los Angeles television CBS