Visible crew/equipment: As the energy being moves down the city sidewalk, we see its shadow on the concrete. Right beside that, however, we can also see the distinctly-shaped shadow of the camera. (00:35:00)
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.
The Architects of Fear - S1-E3
Revealing mistake: In this episode's present-day 1963, the scientists view film footage said to have been taken "yesterday." But the rather obvious crowd scene stock footage is ten years old, featuring cars and clothing no newer than 1953. (00:02:00)
The Architects of Fear - S1-E3
Visible crew/equipment: When Stanley levitates the meteor with his brain power, the wires that actually lift the rock are very easy to spot at the top of the screen. (00:09:30)
Revealing mistake: In the bakery, Will plays a lively tune on the concertina - without touching any of the button-keys necessary to play the notes. (00:26:15)
Continuity mistake: The window in the chamber door changes its size between shots. At first, we can see just Gwyllm's head. But then the window somehow grows so that his head and shoulders are visible. When the window gets smaller again, only part of his head is visible. (00:46:00)
The Man Who Was Never Born - S1-E6
Visible crew/equipment: As the ship lands in the beginning, the wire supporting the model is visible at the top of the screen. (00:04:15)
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)
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.
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)
Continuity mistake: When the lab equipment shorts out after the earthquake, the unconscious Major Brothers is lying with his head propped up against the wall. But when Hamilton reaches him in the next shot, he's suddenly lying flat and is nowhere near the wall. (00:21:45)
It Crawled Out of the Woodwork - S1-E11
Continuity mistake: When Joey turns off the bathtub tap, we can see that the water is no longer flowing. But the sound of running water continues. And a few shots later, the water is flowing once more, even though Joey hasn't gone near the tub again. (00:24:30)
It Crawled Out of the Woodwork - S1-E11
Factual error: When the energy monster kills his entire research staff by stopping their hearts, Dr. Block brings them all back to life (with their minds and personalities intact) by installing pacemakers. But when the heart stops functioning, brain death occurs within minutes. For this to work, he'd not only have to operate on several people simultaneously, he'd also have to be the fastest heart surgeon on Earth. (00:40:00)
Controlled Experiment - S1-E16
Continuity mistake: When Phobos sets up the time converter, the grid on his large round scope has a diamond-shaped pattern. But when we see it from his point of view, the grid comprises perfect squares instead, and contains numbers that weren't there before. (00:15:00)
Don't Open Till Doomsday - S1-E17
Continuity mistake: Harvey peeks into the small hole in the box using his right eye. On the first view from inside the box, a right eye is indeed looking in. But when the monster appears, a left eye is peering through the hole. The shot cuts immediately back to Harvey, who still has his right eye pressed to the opening. (00:06:10)
Factual error: The General brandishes a six-shooter pistol with an enormous silencer attached to it. He's a career military guy who should definitely know better, so he gets a failing grade in Basic Weaponry 101. Silencers don't work on revolvers. (00:34:50)
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)
Continuity mistake: In the lab, the alien's arms change positions instantaneously between shots. (00:13:50)
Visible crew/equipment: While alien reports to home planet, the shadow of the boom mic passes overhead. (00:12:20)
