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The Cosby Show: Season 3

3x21 I Know That You Know
TV-PG

Episode

IMDB TMDB

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Aired1987-03-20T01:00:00Z on NBC
Runtime22m
DirectorJay Sandrich

WritersMatt Williams + 1 more, Carmen Finestra
CountryUnited States
LanguagesEnglish
GenresComedy, Family

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When Sondra and Elvin announce their engagement, Clair and the children use the news to play a practical joke on Cliff, who launches a counter-offensive of his own. Geoffrey Owens as Elvin.

Private Notes

Actors
All Cast & Crew

Season Regulars
7

Guest Stars
1

Geoffrey Owens

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The Cosby Show: Season 3

3x21 I Know That You Know
TV-PG

Actors
All Cast & Crew

Season Regulars
7

Guest Stars
1

Bill Cosby

Heathcliff Huxtable

Phylicia Rashād

Clair Huxtable

Lisa Bonet

Denise Huxtable

Malcolm-Jamal Warner

Theo Huxtable

Tempestt Bledsoe

Vanessa Huxtable

Keshia Knight Pulliam

Rudy Huxtable

Sabrina Le Beauf

Sondra Huxtable

Geoffrey Owens

Find a TV show or movie

The Cosby Show: Season 3

3x21 I Know That You KnowTV-PG

ActorsAll Cast & Crew

Season Regulars 7

Guest Stars 1

Bill Cosby

Heathcliff Huxtable

Phylicia Rashād

Clair Huxtable

Lisa Bonet

Denise Huxtable

Malcolm-Jamal Warner

Theo Huxtable

Tempestt Bledsoe

Vanessa Huxtable

Keshia Knight Pulliam

Rudy Huxtable

Sabrina Le Beauf

Sondra Huxtable

Geoffrey Owens

Find a TV show or movie

3x21 I Know That You Know
TV-PG

Actors
All Cast & Crew

Season Regulars
7

Guest Stars
1