When JJ is kidnapped, the BAU delves into her time at the State Department to find clues to her disappearance and uncover a secret mission that now puts her life in danger. To help with their search for JJ, the team calls upon Prentiss to help in the crisis.

When a 4-year-old girl goes missing while staying with a relative in Mississippi, the BAU uncovers some startling truths as the team races to find the child and bring her to safety.