The Cosby Show S3E21
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The Cosby Show
S03E21 — I Know That You Know
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The Cosby Show

S03E21 I Know That You Know

1987-03-19

Sondra and Elvin share their exciting engagement news, prompting Clair and the kids to pull a playful prank on Cliff. Unfazed, Cliff retaliates with his own clever scheme. Geoffrey Owens stars as Elvin.

Season 3 Episodes

1
Bring 'em Back Alive
1986-09-25
 2
Food for Thought
1986-10-02
 3
Golden Anniversary
1986-10-09
 4
Man Talk
1986-10-16
 5
Mother, May I?
1986-10-23
 6
The March
1986-10-30
 7
Theo's Flight
1986-11-06
 8
Vanessa's Rich
1986-11-13
 9
Denise Gets a D
1986-11-20
 10
A Girl and Her Dog
1986-12-04
 11
War Stories
1986-12-11
 12
Cliff in Charge
1986-12-18
 13
Monster Man Huxtable
1987-01-08
 14
Rudy Spends the Night
1987-01-15
 15
Say Hello to a Good Buy
1987-01-22
 16
Denise Gets an Opinion
1987-02-05
 17
Calling Doctor Huxtable
1987-02-12
 18
You Only Hurt the One You Love
1987-02-19
 19
The Shower
1987-02-26
 20
Cliff's 50th Birthday
1987-03-12
 21
I Know That You Know
1987-03-19
 22
Andalusian Flu
1987-04-02
 23
Bald and Beautiful
1987-04-09
 24
Planning Parenthood
1987-04-30
 25
Hillman
1987-05-07