The team heads to Morocco to search for a missing couple who were visiting Casablanca on a cruise.
The body of a U.S. senator is found in a street sweeper by an unusual pair of sanitation workers. Meanwhile, Aubrey pursues a relationship with "squintern" Jessica, but he also secretly digs into her past to make sure there are no skeletons in her closet that could ruin his dreams of a political future.moreless
Ryan's assignment as part of a congressman's security detail at a charity event puts him in the middle of an assassination plot. Castle and Beckett help him re-examine the events leading up to the shooting to apprehend the killer.moreless
The CSIs start a frenzy of betting pools when it looks like they're about to hit The Cycle: a homicide, suicide, accidental death and natural death during one shift.