Season 1, Episode 21 Mr. Wilson's Sister
Mr. Wilson sends Dennis on a fake treasure hunt. Dennis: Jay North. Mr. Wilson: Joseph Kearns. Helen: Mary Adams. Alice: Gloria Henry. Mrs. Wilson: Sylvia Field.
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- Rating: TV-PG
- Premise: Sitcom mischief with cartoonist Hank Ketcham's comic-strip terror who really didn't mean to do all those things that drove Mr. Wilson crazy. Joseph Kearns, who played Mr. Wilson, died midway through the 1961-62 season. He was replaced by Gale Gordon as Mr.… (more)