On the set of Perry Mason, Raymond Burr lived in a bungalow apartment right there in the studio. The actor was always kind to studio manager Bernie Oseransky, whose job in part was to make sure the show's star had everything he needed at all times. "He could be a warm, fuzzy kind of a guy," Oseransky recalled in an interview with the Archive of American Television. "Sometimes he was difficult with the executives, but he was great with me," Oseransky said. But for all these daily encounters the studio manager had with Perry Mason's star, Oseransky could never have guessed one day he'd get to appear opposite Burr on camera.

That was the case when it came time to write and produce Perry Mason's final episode. It was all the idea of Perry Mason executive producer Gail Patrick. She wanted the last episode of the show to put as many of the crew members who worked behind the scenes on camera as possible. So they wrote the episode to bend to her will, and "The Case of the Final Fade-Out" took place on a studio lot exactly like the one the crew had worked on for the past nine seasons. This allowed for any crew member who had no acting experience or natural talent to simply appear in the background exactly as they were in the studio. This was the case for makeup artist Irving Pringle, who "played" a makeup artist named Irving in the episode.

But for some crew members, and Bernie Oseransky was lucky enough to be among them, there was an audition process where anyone who wanted got a chance to prove they could read lines. Oseransky's audition went so well, they gave him three lines, and he ended up on the witness stand, sandwiched between Perry Mason and the character's creator. Oseransky said in his interview, "They wrote a script where two murders were committed on a studio lot, so that’s how they were able to work everybody in. It was her idea, Gail Patrick Jackson, to try to get as many people on the show as possible. So they had us all come in for two weeks, they were reading everybody to see if they could handle lines, and if they couldn’t, then they’d put them in as background, you know, in the crew or in the jury or out in the courtroom. So I read and they said I could handle lines, so I got three lines. I was on the witness stand with Erle Stanley Gardner being the judge and Raymond was interrogating me."

The memory of this last episode is one that has clearly stuck with the crewman, as he smiled in the interview and gave this humble response when asked what it was like to work with a genuine star like Burr, even just so briefly: "It was a fun experience."