After a series of strangulations in Boston, the BAU looks for an UnSub who likes to keep mementos of the victims, and the team wonders if a common link to the casualties could lead them to the culprit. Meanwhile, the BAU rallies around Rossi when his favorite bar is on the verge of closing.

When skeletons are found in the backyard of a Virginia home, the BAU centers its investigation on the family living there, unearthing family secrets rooted in the past racial divisions in the South.