My Three Sons backdrop

No Image

7.0

My Three Sons•Season 10•Episode 23

Mister X

7.0/10 · 52 votesMar 14, 197025 min

Ranked #22 of 26 in Season 10•−0.5 vs season avg

A bearded man of mystery confounds the Douglas family and the authorities alike, while Steve is working on a top priority project at home. Barbara soon identifies him as her former father-in-law.

Directed byFrederick de Cordova

Previous episodeE22 · Baubles, Bangles, and Beatrice Next episodeE24 · Dodie's Dilemma

Seasons12

All 1 2 3 4 5 6 7 8 9 10 11 12

Cast8

Fred MacMurray

Fred MacMurray

Steve Douglas

Don Grady

Don Grady

Robbie Douglas

Stanley Livingston

Stanley Livingston

Chip Douglas

Barry Livingston

Barry Livingston

Ernie Thompson

William Demarest

William Demarest

Charley O'Casey

Beverly Garland

Beverly Garland

Barbara

Tina Cole

Tina Cole

Katie

Dawn Lyn

Dawn Lyn

Dodie Harper Douglas

Crew1

Frederick de Cordova

Frederick de Cordova

Director

Discussion

0 comments

Join the conversation

Share your take and reply to other fans.

No comments yet

Be the first to share your thoughts on this episode.

Episode Summary

"Mister X" is episode 23 of My Three Sons season 10. It scored 7.0/10 from 52 votes, ranking #22 of 26 episodes this season (season average 7.5). Directed by Frederick de Cordova, it aired on March 14, 1970.

Next: E24 · Dodie's Dilemma Best of Season 10