"The Keys" is the 40th episode of the sitcom Seinfeld. It is the 23rd, and final, episode of the third season and the first of a three-episode story arc. It first aired on May 6, 1992. In this episode, Jerry takes back his spare keys from Kramer, straining their friendship. Candice Bergen guest stars as herself, playing the title character from Murphy Brown (as she did in real life) in a TV episode within a TV episode.