WATCH: Preview Of The NCIS: Los Angeles Season 9 Premiere
In light of the Operation Manager's sudden departure—and amidst a dangerous nuclear threat—Executive Assistant Director Shay Mosley ( Nia Long) arrives on the scene to oversee the LA team and promptly begins making staffing changes.
Meanwhile, Sam ( LL COOL J) continues to mourn the loss of his wife, which we saw in the last two episodes of Season 8 (the full episodes, "Uncaged" and "Unleashed," are available to stream on CBS All Access). As a result, he tries to convince Callen ( Chris O'Donnell) to find a new partner in the new episode entitled "Party Crashers."
STREAM: Full Episodes Of NCIS: Los Angeles On CBS All Access
Will Callen heed Sam's wishes? And just where has Hetty gone off to—and why?
Watch the Season 9 premiere of NCIS: Los Angeles on Sunday, Oct. 1 at 9:30/8:30c on CBS and CBS All Access.