This article provides a list of episodes of the television series Lost in Space. Series overview {| class="wikitable plainrowheaders" style="text-align:center;" |- ! scope="col" colspan="2" rowspan="2" |Season ! scope="col" rowspan="2" |Episodes ! scope="col" colspan="2" |Originally aired |- ! scope="col" | First aired ! scope="col" | Last aired |- | scope="row" bgcolor="000000"| | Pilot | 1 | colspan=2| Unaired |- | scope="row" bgcolor="979797"| | 1 | 29 | September 15, 1965 | April 27, 1966 |- | scope="row" bgcolor="6C91FF"| | 2 | 30 | September 14, 1966 | April 26, 1967 |- | scope="row" bgcolor="FF6229"| | 3 | 24 | September 6, 1967 | March 6, 1968 |} Original pilot Episodes Season 1 (1965–66) All episodes in black-and-white {{Episode table |background=#979797 |overall=2 |season=2 |title=21 |writer=21 |director=16 |airdate=15 |episodes= {{Episode list |EpisodeNumber=1 |EpisodeNumber2=1 |Title=The Reluctant Stowaway |DirectedBy=Anton M. Leader |WrittenBy=S. Bar-David |OriginalAirDate= |ShortSummary=On October 16, 1997 at about 8PM ET, the Robinson family departs from Cape Kennedy, Florida in the Jupiter 2 spaceship to colonize Alpha Centauri, but Dr. Zachary Smith (Jonathan Harris), working as a saboteur for a foreign government, rigs the environmental control robot to destroy the ship's control systems within hours after take off. Events lead to Smith being trapped aboard the doomed ship, which encounters a meteor storm and veers light years off course. Soon, the robot becomes active and does further damage before it can be stopped. Later, Professor John Robinson (Guy Williams) tries to fix the ship's sensor systems but must go outside the craft to perform the repairs. He becomes untethered and his wife Maureen goes out to help him. Guest star: Hoke Howell (Sgt. Rogers) Note: This episode is the first regular pilot of the series. It was nominated in 1966 for, but did not win, an Emmy award for special effects. |LineColor=979797 }} {{Episode list |EpisodeNumber=19 |EpisodeNumber2=19 |Title=Ghost in Space |DirectedBy=Don Richardson |WrittenBy=Peter Packer |OriginalAirDate= |ShortSummary=While drilling for fuel, Dr. Smith sets off an explosive in the wrong part of a bog and unleashes an invisible presence that begins prowling around. Later, Smith makes a ouija board and conducts a séance to contact his deceased Uncle Thaddeus. During the ceremony, the unseen force arrives and rampages around the Robinsons' camp leaving Smith believing it is the angry ghost of his uncle. When it is discovered that the entity can be trapped, and leaves behind three-toed footprints, the Professor and Major West believe it is