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June Lockhart, who previously appeared with Babylon 5 regular Bill Mumy on Lost in Space, guest-stars as Laura Rosen, an unlicensed doctor. Though Dr. Franklin welcomes the "miracle" cure for all diseases developed by Rosen, he cannot shake the feeling that something is seriously amiss. Meanwhile, Talia participates in the "execution" of a condemned man's personality, while Londo and Lennier embark upon a wild B5 pub crawl. Originally titled "The Resurrectionist", "The Quality of Mercy" was written by J. Michael Straczynski. When the episode originally aired on August 17, 1994, it was advertised as Babylon 5's first-season finale -- though there was still one more episode, "Chrysalis", in the series' manifest.