Continuity mistake: When Dr. Strowski approaches the door to the house in the swamp, the door is a dark color with a circular ornament in the middle and only two panels. When the same door is seen from inside the house (the door opens inward), it is a light color, with five panels and no ornamentation.Twotall
Continuity mistake: After Janet has crashed her car in the swamp, you can see a snake in the tree next to her. In long shots, the snake is a light color, and is completely immobile. In close-ups, the snake moves and is a darker color. Also, when Lobo finds Janet, the snake is back to its original position, even though we saw it starting to crawl down the branch it was on.Twotall
Revealing mistake: Every time the octopus kills someone, it is painfully obvious that the octopus is fake, as it never moves. The actors are only lying on top of it with a couple of tentacles wrapped around them, and thrashing about to make it appear as thought they are being killed. It never really works.Twotall
Revealing mistake: When Dr. Vornoff has been subject to his own machine, and has gained "the strength of 20 men", you can easily see the platform shoes worn by Bela Lugosi's stunt double to make him bigger than Tor Johnson. Dr. Vornoff did not wear these shoes when he was strapped to the table, they only appear after he gets up.Twotall
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