Special Enhanced version Digitally Remastered with new exterior shots and remade opening theme song
Syndication versions since the early 1980s and most home video prints replace a recording of "Goodnight Sweetheart" heard in this episode with a generic instrumental track due to music rights issues. The original recording was heard in reruns prior to then and on an early 1980's VHS release by Paramount. The original version was restored when the series was released to DVD.
More recent prints omit the shot in which Rodent accidentally vaporizes himself with McCoy's phaser. Instead, the scene ends with him standing in the alley near the collapsed McCoy and looking bewildered.