At Quantico, the NATS attend a class with guest speaker Dr. Susan Langdon. Dr. Langdon is a former agent and profiler who tasks the trainees with looking at serial killer cases to find the one victim that doesnt fit the case, but when Simon becomes too good at finding things that dont belong, its his life that becomes endangered. In the future, Alex is interrogated by a highly sophisticated FBI team while Ryans life hangs in the balance