"Grandma Jack"
Season Eight, Episode #7
#157 in Series
Series: Three's Company
Network/Country: ABC-TV / USA
Air date 22 November 1983
Production code
Written by Garry Ferrier, Aubrey Tadman and Mike Weinberger
Directed by: Bob Priest and Michael Ross
IMDB IMDb logo Grandma Jack
Cast Information
Starring: John Ritter
Joyce DeWitt
Priscilla Barnes
Don Knotts
Richard Kline
Guest stars: Parley Baer ... as Bert Landers
Cisse Cameron ... as Melody Wilson
Toni Sawyer ... as Marion Holman
Ellen Crawford ... as Brenda McNair
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Grandma Jack is the seventh episode of Season 8 of Three's Company, and the 157th overall episode in the series. Written by Garry Ferrier, Aubrey Tadman and Mike Weinberger, and directed by Bob Priest and Michael Ross, it first aired 22 November 1983 on ABC-TV.


Larry has secretly entered Jack's cookie recipe in the Landers Baking Company contest. When Larry tells Jack he's won a ten-thousand-dollar cash prize, the trio is ecstatic. Larry then explains the catch: the contest is open only to women, so they are expecting Grandma Tripper to pick up the check. After much debate, Jack finally decides to dress up like an elderly woman. The trio arrives at the baking company to discover Grandma Tripper is one of three finalists who must bake their cookies for the company's executives to judge a winner.

After almost blowing his cover by flirting with a pretty finalist and being sabotaged by the other, Jack finally manages to win. However, when Grandma Tripper is crowned, Jack's wig accidentally falls off and the winner's check is promptly snatched from Jack's hand.