Révélant des erreurs: When mortality comes to the vortex, several "dead" characters can be seen moving.
Révélant des erreurs: When the exterminators on horseback are killing the brutals, tire tracks can be seen on the wet beach sand.
Equipe ou équipement visible: Early in the film, when the weapons are spewed out of the floating head's mouth, a crewmember's arm can be seen throwing them.
Equipe ou équipement visible: About three minutes into the movie, when the floating head is in the clouds, part of a car can be seen in the top right corner of the screen.
Equipe ou équipement visible: In the scene where Zed discovers the floating book, you can clearly see the strings suspending it in midair.
Révélant des erreurs: In a scene at the end, when Zed is shooting the mirrors, he has to repeatedly re-cock his Webley-Fosbury revolver by racking the upper frame like a semi-auto slide off camera. This is because this particular revolver was of a unique self-cocking design which used the force of the recoil to cock the hammer and rotate the cylinder for the next shot. Presumably, the blanks used did not have enough force to operate the mechanism, which required a stout powder charge and a firm, elbow-locked grip to function reliably.