NCIS: Los Angeles Season 7 Photos

Callen goes solo in the Sept. 21 NCIS: LA premiere — but he's not alone, at least not in this photo, where a hooded figure looms in the background. Who's poised to get the drop on the NCIS agent? Continue on to find out...

For Sam and Callen, the premiere puts on display "a dynamic we haven't seen before," LL Cool J says, "because this is the first time that we have a situation where one partner's actions jeopardizes the other partner's integrity.... It gets pretty crazy!"

Callen's covert actions "create a lot of tension," especially between the two closest to him. "It will be as bad as it's ever been for him and Hetty, and certainly as bad as it's ever been for him and Sam," show boss Shane Brennan warns. "For Hetty, who took this young man under her wing... it's very painful."

Versus other times when an NCIS team member may have operated on a semi-secret agenda, "This time Callen has decided to go completely rogue, where he's not informed anybody of what's going on," Daniela Ruah, who plays Kensi, observes, "and so they send us out to bring him back at any cost." And bring him back, they had better! "If we don't do it, they'll send in another team who obviously won't have an emotional connection to him," Ruah says. "And we don't want that."