: Sam recovers Michelle's body and, overwhelmed by grief, decides to take a leave of absence from NCIS to focus on his children. Major Milestones

: The team eventually tracks Sam as he confronts Tahir on a tour bus rigged with explosives. In a tense climax, Callen shoots off Tahir's hand to prevent him from using the detonator, and the two agents jump from the bus just before it explodes, killing Tahir.

: Sam detaches from the team, even getting into a scuffle with his partner, Callen, who tries to stop him from taking the law into his own hands.

For further details on how this finale impacted future seasons, you can read the official episode synopsis on the NCIS Database or check out professional reviews at TV Fanatic .