Mister Rogers' Neighborhood - Season 19 Episode 5
Secrets: A Surprise Party for Mister Rogers

Rogers writes a message in invisible ink. Mr. McFeely shows a videotape of how suitcases are made. In the Neighborhood of Make-Believe, Chuck Aber must inform Lady Elaine that he had no plans to marry her, but he does have some good news. Rogers finds a message that leads him outside, where several neighbors hold a birthday party for him.