'NCIS' First Look: Dramatic Season 19 Promo Teases Gibbs' Fate (Exclusive)

The new season moves to a new night, Mondays, beginning Sept. 20.

"This isn't how it ends."

CBS' long-running, top-rated procedural, NCISreturns for its 19th season on a new night, Mondays. In the dramatic first promo teeing up the new season, the squad braces for bad news as they search high and low for their leader, Jethro Gibbs (Mark Harmon), whose boat was blown up and his body last seen floating away in the shocking season 18 finale.

"You found any survivors?" Torres (Wilmer Valderrama) asks, when he arrives at the scene in the fiery aftermath. When he hears that they've located no survivors, the outlook is grim.

"What took so long?" implores McGee (Sean Murray), who emphasizes that Gibbs isn't just their boss and finding him is of utmost importance. "He's family."

It's go time for NCIS, as the promo shows the team members racing against time to find Gibbs, his unclear fate weighing on them. The team is also undergoing massive internal changes after Bishop's departure, which notably affects Torres.

It certainly doesn't look good when Hines (Diona Reasonover) embraces McGee at headquarters and Vance (Rocky Carroll) has a grim expression on his face.

But in the closing seconds of the NCIS promo, Gibbs' fate is finally revealed (maybe): He's alive! Bloodied, wounded and gasping for air, but very much alive as his haggard breaths leave an intriguing tease for what's to come.

Returning to NCIS are Harmon, Murray, Valderrama, Brian Dietzen, Reasonover, Carroll and David McCallum, along with new series regulars Gary Cole and Katrina Law, who play FBI Special Agent Alden Park and Special Agent Jessica Knight, respectively. Emily Wickersham exited the series at the end of last season.

According to a TVLine report in June, Harmon is eyeing a much smaller presence in season 19 with the understanding that he will appear "in the low single digits" when it comes to his official episode count.

CBS and CBS TV Studios, which produces NCIS, have not confirmed the number of episodes Harmon will appear in. However, CBS Entertainment President Kelly Kahl told Deadline on Thursday that "Mark's always been part of the show, Mark's always going to be part of the show." "In terms of his on-air appearances, we're just going to have to see how it plays out going forward," he said.

NCIS moves to Mondays beginning Sept. 20 at 8 p.m. ET/PT on CBS. For more, watch below.

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