My Three Sons/How Do You Know?

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How Do You Know?
Season 4, Episode 6
Airdate October 24, 1963
Teleplay by Joanna Lee and
Gail Ingram Clement
Story by Joanna Lee
Directed by Gene Reynolds
Produced by Edmund Hartmann
← 4x05
A Car of His Own
4x07 →
My Friend Ernie
My Three SonsSeason Four
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How Do You Know? is the sixth episode of the fourth season of My Three Sons, and the one hundred seventeenth episode overall.

Starring: Fred MacMurray (Steve Douglas)

and William Frawley (Bub)

Tim Considine (Mike), Don Grady (Robbie), Stanley Livingston (Chip)

Additional Cast: Meredith MacRae (Sally), Julie Parrish (Darlene), Russell Duke (Chuck), Cliff Sales (Moose), Bobo Lewis (Helen), Annalena Lund (Gloria)


Plot Overview


Arc Advancement





The Show

Behind the Scenes

Allusions and References

Memorable Moments