Continuity: The first time Morgan goes searching for corpses to incinerate, he puts a man and a woman into the back of his station wagon head first. When he arrives at the garbage dump, the woman is now lying feet first in the back of the car and has switched sides with the man.
Errors made by characters (possibly deliberate errors by the filmmakers): The newspaper headline has an apostrophe typo: "Is Europes' disease carried on the wind?"
Continuity: In the flashback sequence where Morgan takes his wife's body in his car for a secret burial, the shots of him inside the car driving shows that it is night or pre-dawn. However, the exterior shots of the car moving along on the road show that it is already daylight.
Continuity: The first station wagon Price has (a Chevy) turns into a Ford (look for the 4 headlights) and back to the Chevy (2 headlights). He eventually ends up with the Ford after the zombies wreck the Chevy.
Revealing mistakes: Just over 1 minute into the film, in one of the first shots of the deserted city a man can be seen walking backwards and forwards behind a fence.
Continuity: Morgan drops his bag of stakes on the driveway before loading the bodies into his car, then he gets directly into the car without picking up the stakes.
Continuity: When Robert Morgan is outside the grocery store, the reflection of a passing car can be seen in the grocery's windows in the upper left-hand part of the screen.
Continuity: When Morgan drives back home from the crypt, it's at night, but one of the shots of him driving is in broad daylight.
Plot holes: When Morgan returns home at night and is fighting the vampires he opens his unlocked front door and enters. The marauding vampires should have been able to enter the home, before his arrival, with the door unlocked.
Revealing mistakes: At the beginning, when Morgan goes out searching for corpses to incinerate, after he puts a man and a woman into the back of his car, it is possible to see the two actors moving themselves to settle down in the back of the car.
Continuity: When Vincent Price is dumping bodies into the city dump, in the long shot, he has a '55 Chevy. The next time it cuts to a long shot, it is a '58 Ford.
Continuity: When Morgan is burying the dead dog, his parked car can be seen in the background. In some shots, the doors are left open, in others the doors are closed.