The NCIS team join forces with the FBI when a group of grisly murderers known as "The Body Stitchers" returns after evading capture by NCIS years ago. Also, Sam's dad makes a new friend in Arkady
Jean fears her family is drifting apart so she brings everyone together for a game night that doesn't go as planned.
Before Sharon leaves town, she and Jean decide to plan a trip to Vegas; Celia and Freddie have a serious conversation about whether or not they want kids.