The team head to Canada to investigate the disappearances of a number of homeless people, drug users and sex workers and uncover something horrific in part one of the season finale.
Shaun is ready for the next step in his relationship with Carly. However, he continues to struggle as they grow closer and more intimate, and is dealt some troubling news about a deeply personal issue. Meanwhile, a young patient must decide on a treatment that could save her life or possibly destroy her marriage.
As Peter strategizes on how to handle his retrial and the next steps in his public rehabilitation, Alicia and Will defend an attorney arrested for murder.
Tennant and NCIS must take down a notorious team of international thieves using WWII explosives on armored trucks before they complete their final big job and disappear. Also, Kai searches for a new place to live; Lucy and Whistler have a standoff about their previous encounter; and Ernie's mission in the field is more alarming than he expected.
The team treats an Army veteran who refuses treatment unless he and his brother are given information about their dead father; Adams seeks help when she suspects House is sick.
