Tammy shows up at an awards ceremony to sabotage Ron's new relationship, and four of Jerry's co-workers are shocked that he's throwing a Christmas party without them.
Jess avoids her feelings for Nick by taking care of her dad in Portland.
Christy and Bonnie go above and beyond to help Marjorie… and her eight cats… as she deals with a serious health issue. Meanwhile, Violet is frustrated with the realities of pregnancy.
McGee's personal life and professional life intersect when a dad from his children's school is linked to a break-in at a government storage bunker.
The team reviews the 1966 shipboard killing of a young woman previously thought to have jumped overboard; Maj. Kitchener (Daniel Baldwin) stands trial for running Rush's car off a bridge.