Continuity: When we first see Tor Johnson and the other policemen coming out of the police station it's pitch black out. In the next shot of them driving to the cemetery it's broad daylight.

Revealing: In the cemetery, you can see the actors' shadows on the fake sky.

Revealing: When the flying saucers passes over the cemetery, everybody falls on the ground but the fog stays still.

Continuity: The stewardess says to the pilot, "I'll be right back," as she touches him with her right hand. In the next shot she's nowhere near him.

Visible crew/equipment: While the spaceship is flying, the string is very visible. Also, you can see on the bottom of the spaceship/plate that there is a flowery design.

Audio problem: Inside the alien spacecraft Jeff Trent shoots at the alien device and they overdub the sound of a bullet ricocheting off of a rock like in an old 50's western.