NCIS: LA: Callen is going rogue in exclusive sneak peek

What’s Callen hiding from his NCIS: LA team?

We last left Callen (Chris O’Donnell) surfing a roller coaster of emotions after learning that his father was alive way past the date he thought that he had died — Callen then learned his dad really passed away in 2008. (Or did he? Right after Callen leaves the café, his father walks in. Can you say cliff-hanger?)

As season 7 opens, we find Callen going rogue to tackle a secret operation that (ostensibly) even Hetty (Linda Hunt) and Sam (LL Cool J) are in the dark about. Of course, Hetty orders the team to shut it down, but given what Callen learned at the end of last season, it’s no surprise that he’s embarking on a self-destructive path.

Check out the above exclusive sneak peek at the new season of NCIS: LA before it returns Monday, Sept. 21 at 10 p.m. ET on CBS.

•Spoiler Room: Scoop on Blacklist, Sleepy Hollow, The Flash and more

•Spoiler Room: Scoop on Vampire Diaries, Agents of S.H.I.E.L.D., NCIS: LA and more

•NCIS: LA: Time to meet Marty Deeks’ mom

WANT MORE EW? Subscribe now to keep up with the latest in movies, television and music.