TV highlights: 'Castle' and 'The Blacklist' finales on ABC and NBC

The penultimate episode of the ninth season of "Bones" (Fox at 8 p.m.) has a swim coach at a community college found dead at the bottom of a well, and suspects think an affair is to blame. The five remaining celebrity contestants take the stage with American icons (think Marilyn Monroe, Fred Astaire, etc.) in mind on "Dancing With the Stars" (ABC at 8). Kenny Ortega guest judges.