This drama began as a mid-season filler, but it became a hit. "Castle: Season 1" is a police drama about the protagonist, Rick Castle. Why does this drama stand out among other police shows? "Castle: Season 1" includes a quick wit and a sense of humor that makes the show more appealing. This 3-disc set includes all of the episodes of the first season as well as a number of features. The bonus features included on the 3-disc set include bloopers, a documentary of the creation of the story line, commentary, and the details of the guest stars. "Castle: Season 1" is a police drama with a healthy injection of romance, tension, and comedy. The story follows Frank Castle, a novelist, and Detective Beckett as the main two characters and there is plenty of romantic tension between the two as they work to solve cases and deal with crimes.