Revealing mistake: When the alien posing as a human is exposed, the OBIT screen shows his "true" alien form while he continues to appear human to the naked eye. The actor in alien costume on the screen copies Jeff Corey's movements, but at one point rather badly shatters the illusion by forgetting to raise his arms when Corey does. (00:47:00)
The Man Who Was Never Born - S1-E6
Plot hole: Andro has memorized "every detail" of Cabot Jr.'s life, including his mother's name, Noel. Yet when he travels to the past, meets Noel and learns her name, he still mistakes Cabot Sr. for Cabot Jr., who isn't born yet. Having memorized all those details, he would have known the moment he met her that Noel was Jr.'s mother. Andro's confusion makes no sense. (00:28:00)
Revealing mistake: The injured Spain falls and tries to crawl away from the alien, leaving handprints in the dust on the floor. Just to his left, you can see several handprints already on the floor from previous takes. (00:47:30)
Visible crew/equipment: The shadow of the boom mic is visible on the wall on the left side of the screen. (00:31:00)
Visible crew/equipment: The shadow of the boom pole and mic are visible on the floor. (00:22:55)
Character mistake: Dr. Kagan, who's a scientist and should definitely know better, points to Earth's solar system on the chart and calls it "our galaxy." This is roughly the equivalent of mistaking a dot this size [.] for the entirety of North America. (00:23:30)
Visible crew/equipment: During Ellis and Cutler's conversation in the courthouse foyer, the boom shadow makes two appearances: once over Ellis' shoulder when they start across the hall, and again over the elevator doors. (00:10:30)
Continuity mistake: From the Mars rocket's cockpit, Boomer hears Thomas scream once, shouts, "I'm coming!" and races out. When Earth Command hears this on delayed radio transmission 3.5 minutes later (it would take much longer than that from Mars, by the way), there's added dialogue, and this time Boomer never says "I'm coming." We also hear Thomas scream twice instead of just once. (00:07:30)
Revealing mistake: Indicative of previous takes, the floor inside the alien probe already has several human footprints all over it before the characters exit their life boat and walk on it. (00:10:00)
The Man Who Was Never Born - S1-E6
Visible crew/equipment: After Mrs. McCluskey faints, when Noelle kneels down beside her, the moving boom mic casts a shadow on the rug, at the right side of the screen.
Continuity mistake: In part 1 and part 2, the character that Donald Harron portrays is noted as "Art Harris" in the opening credits of both episodes. The problem occurs during part 2, where the character is repeatedly referred to as "Ray" Harris, the FBS Deputy Director. (00:05:15 - 00:05:50)
Visible crew/equipment: At the start, when Ballard and Harris walk into apartment 17 to wait for Minns, just as Ballard is introduced to the others, the shadow of the boom mic drops down on the door, at the right side of the screen. (00:01:10)
Visible crew/equipment: When the engineer brings Carol back to the transmitter, he is running up the driveway. The camera shadow is visible on the pavement.
Visible crew/equipment: When Carol walks up the drive to the transmitter, the shadow of a crew member is visible on the pavement. It moves.
Revealing mistake: Eddy Albert's stunt double is obvious during the avalanche of boulders scene.
Visible crew/equipment: While alien reports to home planet, the shadow of the boom mic passes overhead. (00:12:20)
Demon With A Glass Hand - S2-E5
Continuity mistake: Trent and the Kiban agent crash through a glass window during their fight in the attic. After Constanza pulls off the alien's medallion and disintegrates him, Trent, who is bent backward at the waist over the windowsill, has instantly moved between takes to a position much farther out onto the ledge.
Continuity mistake: At the end, the unconscious Lt. Branch changes position on the floor between takes. (00:45:05)
Demon With A Glass Hand - S2-E5
Continuity mistake: Trent pushes three of the hand-shaped computer's fingers back as far as they will go, as it instructs him to do. In one brief shot after this, the fingers have returned to their normal position. One shot later, they're pushed back again.
Revealing mistake: Janie is frozen in place on her tricycle, but the 5-year-old actress has a hard time holding still. She's visibly fidgeting. And when a freeze-frame of her is used for close-ups, there's a black blotch on the film over her neck. (00:26:30)
