Lost in Space
The Promised Planet
TV Flash files “The Promised Planet” as hour 78 of 83 in the TV Flash guide — Lost in Space (1965–1968) on CBS, season 3, episode 19, aired 1968-01-24, 60 min.
From the desk
How this hour is filed
This leaf is S03E19: listed hour 78 of 83 in the Lost in Space guide, hour 19 of 24 in season 3. It aired 1968-01-24 (60 min). The listed hour before it is “The Time Merchant” (S03E18). Next is “Fugitives in Space” (S03E20).

Catalog log
Broadcast listing — not a TV Flash recap.
When the Robinsons nearly reach Alpha Centauri, they find a human base run by young people. They convince the adults that Penny and Will aren't their children and they leave in the Jupiter 2.
Viewer FAQ
Where does The Promised Planet sit in the Lost in Space guide?
S03E19 is listed hour 78 of 83 — hour 19 of 24 in season 3, season 3 episode 19.
When did Lost in Space S03E19 air?
The Promised Planet aired 1968-01-24 and is listed at 60 minutes.
Where should I start?
If you want the straighter adventure, begin with the early Robinson-mission hours. If you want the camp classic, jump to later color episodes where Harris's Dr. Smith and the Robot fully hijack the tone.
In the series
Why this series still plays
The Robinson family, a stowaway villain, and a clanking robot tumble through Irwin Allen's space-opera danger. Guy Williams and June Lockhart headed the mission; Jonathan Harris's Dr. Smith stole it with glorious cowardice. Danger, Will Robinson — start straighter, stay for the camp, or vice versa.
The warning is the brand. CBS's *Lost in Space* (1965–1968; 83 episodes) sends the Robinson family, a stowaway villain, and a clanking robot through Irwin Allen's space-opera danger. Guy Williams and June Lockhart head the colony mission. Billy Mumy's Will Robinson takes the warning. Jonathan Harris's Dr. Zachary Smith steals the hour with glorious cowardice and 'the pain' monologues. Early episodes lean straighter adventure; later seasons embrace camp color. That tone shift is the structure, not a betrayal. Mark…
Filed against
- Guy Williams as Prof. John Robinson
Guy Williams’s Don Diego / Zorro carved a Z into 1950s catalog Disney adventure — theme song as instant recognition, then Lost in Space stretching the jawline into a Robinson patriarch while a stowaway stole the camp. TV Flash files him…
- June Lockhart as Maureen Robinson
June Lockhart mothered two American fantasies without blinking: Ruth Martin on Lassie, then the Robinson household on Lost in Space. Collie loyalty as a weekly serial; Irwin Allen’s space-opera danger with a stowaway and a clanking robot.…
- Mark Goddard as Maj. Don West
Mark Goddard flew the hothead as Maj. Don West on Lost in Space — Robinson family, stowaway villain, clanking robot, Irwin Allen space-opera danger. Guy Williams and June Lockhart headed the mission; Jonathan Harris’s Dr. Smith stole it…
- Marta Kristen as Judy Robinson
Marta Kristen kept the Jupiter family-shaped as Judy Robinson on Lost in Space — Irwin Allen space-opera danger, a stowaway villain, a clanking robot, Guy Williams and June Lockhart heading the mission while Jonathan Harris’s Dr. Smith…
- Billy Mumy as Will Robinson
Billy Mumy’s Will Robinson heard Danger on Lost in Space — the Robinson family, a stowaway villain, a clanking robot, Irwin Allen space-opera danger, Guy Williams and June Lockhart heading the mission, Jonathan Harris’s Dr. Smith stealing…
- Jonathan Harris as Dr. Zachary Smith
Jonathan Harris’s Dr. Zachary Smith stole Lost in Space with glorious cowardice — the Robinson family, a stowaway villain, a clanking robot, Irwin Allen’s space-opera danger. Guy Williams and June Lockhart headed the mission; Harris took…