TV The Waltons - Season 4 Episode 16 : The Secret The Waltons - Season 4 Episode 16 : The Secret 7.2/10 by 101 users Jim-Bob thinks he was adopted. He searchs his birth records and finds out he's a twin. Jim-Bob's twin brother died at birth. Details Casts Posters Images Title The Waltons - Season 4 Episode 16 : The Secret Alternative Titles La Famille des collines First Air Date 1972-09-14 Last Air Date 1981-06-04 Number of Episodes 210 Number of Seasons 9 Genres Drama, Networks CBS, Casts Ralph Waite, Jon Walmsley, Mary Elizabeth McDonough, David W. Harper, Earl Hamner, Jr., Eric Scott, Kami Cotler, Joe Conley, Judy Norton Plot Keywords , John Walton Sr. Ralph Waite Jason Walton Jon Walmsley Erin Walton Mary Elizabeth McDonough Jim-Bob Walton David W. Harper Narrator Earl Hamner, Jr. Ben Walton Eric Scott Elizabeth Walton Kami Cotler Ike Godsey Joe Conley Mary Ellen Walton Judy Norton Episodes List The Waltons Season 4 :Episode 1 The Sermon The Sermon 1975-09-11 The Waltons live their life in a rural Virginia community during the Great Depression and World War II. The Waltons Season 4 :Episode 2 The Genius The Genius 1975-09-18 The Waltons live their life in a rural Virginia community during the Great Depression and World War II. The Waltons Season 4 :Episode 3 The Fighter The Fighter 1975-09-25 The Waltons live their life in a rural Virginia community during the Great Depression and World War II. The Waltons Season 4 :Episode 4 The Prophecy The Prophecy 1975-10-02 The Waltons live their life in a rural Virginia community during the Great Depression and World War II. The Waltons Season 4 :Episode 5 The Boondoggle The Boondoggle 1975-10-09 The Waltons live their life in a rural Virginia community during the Great Depression and World War II. The Waltons Season 4 :Episode 6 The Breakdown The Breakdown 1975-10-16 The Waltons live their life in a rural Virginia community during the Great Depression and World War II. The Waltons Season 4 :Episode 7 The Wing-Walker The Wing-Walker 1975-10-23 The Waltons live their life in a rural Virginia community during the Great Depression and World War II. The Waltons Season 4 :Episode 8 The Competition The Competition 1975-10-30 The Waltons live their life in a rural Virginia community during the Great Depression and World War II. The Waltons Season 4 :Episode 9 The Emergence The Emergence 1975-11-06 The Waltons live their life in a rural Virginia community during the Great Depression and World War II. The Waltons Season 4 :Episode 10 The Loss The Loss 1975-11-13 The Waltons live their life in a rural Virginia community during the Great Depression and World War II. The Waltons Season 4 :Episode 11 The Abdication The Abdication 1975-11-20 The Waltons live their life in a rural Virginia community during the Great Depression and World War II. The Waltons Season 4 :Episode 12 The Estrangement The Estrangement 1975-12-04 The Waltons live their life in a rural Virginia community during the Great Depression and World War II. The Waltons Season 4 :Episode 13 The Nurse The Nurse 1975-12-11 The Waltons live their life in a rural Virginia community during the Great Depression and World War II. The Waltons Season 4 :Episode 14 The Intruders The Intruders 1975-12-18 The Waltons live their life in a rural Virginia community during the Great Depression and World War II. The Waltons Season 4 :Episode 15 The Search The Search 1976-01-01 The Waltons live their life in a rural Virginia community during the Great Depression and World War II. The Waltons Season 4 :Episode 16 The Secret The Secret 1976-01-08 The Waltons live their life in a rural Virginia community during the Great Depression and World War II. The Waltons Season 4 :Episode 17 The Fox The Fox 1976-01-15 The Waltons live their life in a rural Virginia community during the Great Depression and World War II. The Waltons Season 4 :Episode 18 The Burn Out The Burn Out 1976-01-22 The Waltons live their life in a rural Virginia community during the Great Depression and World War II. The Waltons Season 4 :Episode 19 The Big Brother The Big Brother 1976-01-29 The Waltons live their life in a rural Virginia community during the Great Depression and World War II. The Waltons Season 4 :Episode 20 The Test The Test 1976-02-05 The Waltons live their life in a rural Virginia community during the Great Depression and World War II. The Waltons Season 4 :Episode 21 The Quilting The Quilting 1976-02-12 The Waltons live their life in a rural Virginia community during the Great Depression and World War II. The Waltons Season 4 :Episode 22 The House The House 1976-02-19 The Waltons live their life in a rural Virginia community during the Great Depression and World War II. The Waltons Season 4 :Episode 23 The Fledgling The Fledgling 1976-02-26 The Waltons live their life in a rural Virginia community during the Great Depression and World War II. The Waltons Season 4 :Episode 24 The Collision The Collision 1976-03-04 The Waltons live their life in a rural Virginia community during the Great Depression and World War II.