Peter and Neal try to track down smuggled Iraqi artefacts, with clues pointing to either a U.S. soldier or a news producer.
Betty finds herself competing with Kimmie who finally shows her true colours, and new citizen Ignacio prepares to vote for the first time.
Castle and Beckett are adjusting to Beckett's career change, when a call from a mysterious stranger sets off an explosive chain of events.
Oscar's agent decides it's time to shake things up on the radio show after Oscar is taunted by a rival host; Felix is excited about meeting Emily's mother.