The BAU travels to Mexico to aid in the capture of a serial killer who has targeted elderly women.
After a student is gunned down, the investigation reveals that the victim had many secrets; Jane's mother and father fight.
While investigating a subway worker's murder in Central Park, Castle and Beckett unexpectedly uncover a boy's abduction.
As Jesse enjoys a day sailing with his daughter, pirates suddenly seize their yacht; the team must quickly locate and rescue Jesse's daughter.
When an explosion rocks a summit on global terror, the team suspects Gibbs' archenemy is responsible; Gibbs tries to help Fornell after his wife's murder.