The Twilight Zone

While Ferris is speaking to the mockup, a fly appears, it lands on the car door and remains there.

In the end credits, Jay Overholts is listed as Jay "Overholt"

The glass face of the booth's clock is broken into more pieces when shown in close-up.

Denton passes out and the gun appears to his right hand. When he wakes up, it's next to his left hand.

Although set in the Old West, modern-day (for 1959, anyway) radio antennas can be glimpsed off in the distance.

The windshield on the convertible in the opening scene at the service station, with the camera shooting from the rear of the car, is so opaque or occluded that it would have been impossible to have seen through to drive.

For all the creativity Bedeker put into his attempts to cash in on endangering his life, he seems not to have considered ways to avoid the life sentence. He could attempt to escape, for example. He certainly wouldn't be killed in the attempt, after all.

Actor Nesdon Booth's credit is mispelled as "Nesden Booth" in the closing credits.

Following Col. Forbes' flashback in the majors room. The Colonel looks into the mirror and sees he is not there, only you can still see his arm in the mirror

When Renard enters the elevator, his scarf is hanging straight down his back and is well clear of the elevator doors. However, in the next shot the scarf is suddenly at an angle and caught in the doors.

The scene just before the first commercial break and just after Rod Serling's opening narration is obviously being played in reverse. The smoke is traveling downward and back into Renard's cigarette.

Throughout the episode, there is no rear-view mirror, until the very final scene when needed.

Most sources, including The Twilight Zone Companion, list the name of Jeff Morrow's character as Kurt Meyers. However, when the crew are at the mayor's house and Webber asks Meyers if he believes his theory about accelerated time, he calls him "Carl."

When the men find the mayor, Webber suggests that it's an illusion to make them think they've returned to 22nd century Earth. However, he then says, "This is more than 200 years ahead of our time." He should say that it's two hundred years behind their time.

When the crew find the frozen dog at the beginning, they make no effort to determine if it's alive but frozen, stuffed, a wax statue, or anything else. They simply shrug and continue exploring.

The crew of the spaceship are supposed to be in a "far corner of the universe", and the asteroid has twin suns in the sky. However, 655 million miles from Earth only puts them between Jupiter and Saturn.

Despite the director's best efforts, the use of normal people simply trying to stand still and pretend they're statues doesn't work very well - they are almost constantly swaying and moving a bit.

When Kirby approaches the fisherman, there is a shot of Meyers and Webber on the bridge. A still photo is used to show them, making them appear as frozen as all the other displays on the planet.

Apparently the bathroom attendant is in on the whole duplicate scheme. When Millicent sees herself in the mirror when she opens the ladies room door, the bathroom attendant can see Millicent's duplicate directly just as Millicent can see it reflected. And yet the bathroom attendant never says anything to confirm that Millicent isn't hallucinating.

Professor Jameson reads a diary passage to his students and says it was written on Tuesday, Sept. 11, 1864. However, Sept. 11, 1864 was a Sunday.