9 Things We Need to Know After the 'NCIS: LA' Season 10 Finale (PHOTOS)

Meredith Jacobs

Over 10 seasons, NCIS: Los Angeles has shown it knows how to do a season-ending cliffhanger, whether it's leaving team members' lives in the balance or potentially starting a war, and it did just that yet again in May with "False Flag."

JAG's Harm (David James Elliott) and Mac (Catherine Bell) joined the L.A. team for a case that led to Chechen spies on board the USS Allegiance, Russian ties, and missile launches that could lead to a war. Oh, and two of the team was under fire in Iraq with no help in sight.

13 'NCIS: LA' Cases That Stay With Us (PHOTOS)See Also

13 'NCIS: LA' Cases That Stay With Us (PHOTOS)

From horrific crimes to emotional moments, here are the episodes we can't forget so easily.

Click through the gallery above for all the loose threads we need tied up neatly in bows when the CBS drama returns in the fall, from least to most pressing.

NCIS: Los Angeles, Season 11 Premiere, Sunday, September 29, 9:30/8:30c, CBS