Thanksgiving with Marshall's family is stressful when Lily thinks she might be pregnant. Robin, Barney, Ted spend the holiday volunteering.
The BAU travels to Portland to assist local authorities in investigating the disappearances of people who are new to the city.
Susan discovers revealing secrets about her future in-laws; Gaby has a devastating catastrophe; an unexpected love affair develops.
An unexpected announcement at Gaby's engagement party; a dead body in a home on Wisteria Lane; Susan makes a choice between Ian and Mike.
The team takes on the case of a woman who was rescued at sea en route from Cuba in her desperate bid to get a diagnosis from Dr. House.