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Season guide

My Three Sons: Season 4

37 episodes Premiered Sep 19, 1963
Previously on My Three Sons

Season 4 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • Directly follows the overarching narrative developments of My Three Sons Season 3.
  • Faction dynamics and core character alliances shift under escalating external stakes.
  • Crucial mysteries introduced previously reach key turning points and narrative reckonings.
  • Sets up serialized story arcs that build directly toward the climactic season finale.
Season 4 Episodes

Episode Guide

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Season 4 Progress Shield

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Binge Efficiency Engine

Season 4: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

8%
92%
Mytharc (3): Crucial lore & season climaxes
Core (34): Character development & subplots
Side Quest (0): Standalone / filler
S4·E1 Mytharc

Almost the Sound of Music

Sep 19, 1963

To capture the affections of a pretty blond, Robbie turns pop composer and produces a novelty song. The family agrees to do the vocal background, but when they are selected to sing

S4·E2 Core

Scotch Broth

Sep 26, 1963

The Douglas family inherit a castle in Scotland from their Scottish Grandfather and the whole family descends upon Sheehan Bridge to see it. Not only does 'The Castle' turn out to

S4·E3 Core

Didya Ever Have One of Those Days?

Oct 3, 1963

It's a bad day for Steve when everything seems to be going wrong for him. His run of bad luck starts when he cuts himself shaving, burns his hand on the toaster, and then can't ge

S4·E4 Core

Dear Robbie

Oct 10, 1963

Robbie is chosen to write an 'advice to the lovelorn' column for the school newspaper, but Steve gets caught in the middle when a baffling love letter arrives. Robbie suggests that

S4·E5 Core

A Car of His Own

Oct 17, 1963

Mike offers to give Robbie his old car but his response baffles everyone. Robbie says he needs his own car to impress a new girl and does some fancy wheeling and dealing to get it.

S4·E6 Core

How Do You Know?

Oct 24, 1963

Steve gives Mike advice on love after he announces his passion for his new girlfriend Darlene, who Mike wants to devote time to, so he hardly welcomes Steve's suggestion that he he

S4·E7 Core

My Friend Ernie

Oct 31, 1963

Chip and his new sidekick Ernie find some old treasure maps but get lost in the woods when they go treasure hunting, causing the family's plans to be changed when they have to go l

S4·E8 Core

The End of The You-Know-What

Nov 7, 1963

Chip and Ernie, having heard two scientists calculate that the world will be destroyed in one week are faced with the classic problem of what to do in the time they have left.

S4·E9 Core

The Toupee

Nov 14, 1963

The pungent smell around the Douglas home proves to emeante from Bub's head for his baldness is anointed with yet another hair restorer as he's in a panic to cover his bald spot wh

S4·E10 Core

The Ever-Popular Robbie Douglas

Nov 21, 1963

Robbie is faced with a real political dilemma when he and a rival for a girl's affections, are campaigning for Student Council Representative.

S4·E11 Core

The Proposals

Nov 28, 1963

Mike gets cold feet when he decides to propose marriage to Sally. His bungling attempts further confuse the issue. He tries a combination of methods derived from the attempts made

S4·E12 Core

Steve and the Viking

Dec 5, 1963

Steve is chosen to act as nursemaid for the attractive daughter of a visiting Danish dignitary who turns out to be only 17. The girl's energetic idea of fun brings Steve to his kn

S4·E13 Core

Par for the Course

Dec 12, 1963

Robbie is always forgetting to pass on Steve's telephone messages and to get back in his good graces, decides to take up his father's favourite sport. He figures it will get him ou

S4·E14 Core

Windfall

Dec 19, 1963

Chip comes to the rescue of a trapped dog and receives a reward, which leads to new found popularity with his fellow members of the club that he and Ernie wish to join.

S4·E15 Core

Top Secret

Dec 26, 1963

Steve has to fly to Washington and is given a top secret military project. Steve tells the Pentagon brass that he would attract the least attention by just doing the work at home.

S4·E16 Core

Will Success Spoil Chip Douglas?

Jan 2, 1964

Ex-thespian Bub laments that there hasn't been a member of the Douglas family in show business for over thirty years, so he is delighted when Chip is selected to portray an America

S4·E17 Core

Second Chorus

Jan 9, 1964

While walking the dog through the park one night, Steve meets a lovely cabaret singer and before the evening ends he is out night-clubbing with her. Mike and Robbie feel they must

S4·E18 Core

Never Look Back

Jan 16, 1964

Steve eagerly anticipates his twenty fifth anniversary class reunion at Midwest University. Ignoring Bub's warnings that the old gang won't be as Steve remembers them, his enthusia

S4·E19 Core

Marriage by Proxy

Jan 23, 1964

Mike and Sally try to discover the truth about marriage from two of their recently wed friends, and think twice about getting married and having babies when they help another frien

S4·E20 Core

The Chaperone

Jan 30, 1964

Bub is appointed chaperone to Robbie and his friends when they decide to have a costume party. Robbie feels it will dampen the party as Bub doesn't see eye to eye with them on the

S4·E21 Core

My Fair Chinese Lady

Feb 6, 1964

Robbie is chosen to help Americanize a traditional Chinese girl who is soon to meet her very hip Chinese-American fiancé. However, she is a girl so steeped in the traditions of he

S4·E22 Core

House for Sale

Feb 13, 1964

The family is excited when Steve might travel to Hawaii on business, but there is dismay on their faces when the 'For Sale' sign goes up outside 837 Mill Street. Going on a trip to

S4·E23 Core

Stone Frog

Feb 20, 1964

Chip believes in a magical stone frog, given to him by a lady from India and as coincidences stack up, the magic is hard to deny. The boy's belief causes some very interesting circ

S4·E24 Core

Stage Door Bub

Feb 27, 1964

Bub wants to get back to the greasepaint, so he swaps jobs with an actress friend at the Playhouse theater who longs for a normal home life. Each is so envious of the other's life

S4·E25 Core

Fish Gotta Swim, Birds Gotta Fly

Mar 5, 1964

Mike feels that Sally should learn how to fish, since she's joining a family of avid fishermen - Except that Sally really hates the pastime. How coincidental then that Mike hates b

S4·E26 Core

Cherry Blossoms in Bryant Park

Mar 12, 1964

Kimiko, a Japanese girl Mike met in Tokyo last year comes to town to test her old feelings for Mike before she can be sure she loves another. Although Mike is now engaged to Sally,

S4·E27 Core

What's the Princess Really Like?

Mar 19, 1964

Steve's high school sweetheart returns to town as a real-life Princess, complete with entourage and the Douglases are invited to a posh royal reception in her honor. However, Chip

S4·E28 Core

The People's House

Mar 26, 1964

In order to get himself a date with an attractive magazine editor, Steve submits his house as an entry in her magazine's distinctive homes contest. He is very perplexed when she

S4·E29 Core

The Tree

Apr 2, 1964

The town of Bryant Park takes sides violently when it is proposed to cut down the tree which stands outside of Robbie's girlfriend's home. The Douglas family are soon involved as B

S4·E30 Core

The Substitute Teacher

Apr 9, 1964

Disciplinarian Mrs. Proctor, Robbie's awful history teacher, breaks a leg and the replacement they receive is even worse. She is a charming, but inexperienced girl who earns her

S4·E31 Core

Mike Wears the Pants

Apr 16, 1964

Anxious to get married, but unable to afford an apartment, Mike suggests that he and his fiancee Sally move in with him and his family. Bub has to continuously change plans for a

S4·E32 Core

The Guys and the Dolls

Apr 23, 1964

Mike and Chip take part in good deeds -- Mike goes with his fellow U.S. Air Force Reservists to deliver ten thousand dolls to children in a South American disaster area. Mike meets

S4·E33 Core

The Ballad of Lissa Stratemeyer

Apr 30, 1964

When Robbie's team gets slaughtered one too many times, their keenest fan Lissa Stratemeyer gets her girlfriends to ignore the boys for the victory rally until they do something ab

S4·E35 Core

Adventure in New York

May 14, 1964

Aspiring song writers Mike and Robbie decide to take a song they wrote to New York City and present it to a publisher. A friendly cab driver helps them in their quest and the publi

S4·E36 Mytharc

Huckleberry Douglas

May 21, 1964

Mark Twain's stories inspire Chip, Ernie and Melinda to re-enact the adventures of Huckleberry Finn, Tom Sawyer and Becky when the youngsters run away from home to the river where

S4·E37 Mytharc

Guest in the House

May 28, 1964

Steve is roped into boarding a delinquent for just one week so the boys put on their armor and ready themselves for battle. When Steve is notified to fly out of town on business, t