When Claudette and the counselors are singing in the beginning, the close-ups of Claudette show her legs crossed, but the far-away shots show her legs spread apart. Also, when Claudette finishes playing the guitar, the music continues after she stops strumming the strings. If you look at Claudette’s socks as she leaves the cabin, they are pulled up to just about the middle of her calves. However, when she enters the barn with Barry shortly after, the top her socks are folded down so that they appear to be just above her ankles. When Annie comes into the store, the storekeeper is leaning against a counter to the left. When it switches to the frontal shot, she is standing in the middle and not leaning against anything. Finally, when it returns to the original shot, the storekeeper is once again shown leaning against the counter. Annie says she hates it when people call children "kids", but earlier she said that she'll be cooking for 50 kids and ten staff. When Ned, Jack and Marcy are introduced in the truck, you can see the road behind them is a rocky country road surrounded by trees. In the long distance shot it shows the truck driving on a blacktop main road with few trees. These two shots are intercut and so they appear to jump back and forth. After Steve, Marcy, Ned and Jack get the tree stump out of the ground near the lake, Alice joins them and puts a bucket she is carrying down on the ground. In the next shot, Alice is again seen putting the bucket down. When Steve is talking to Alice outside the cabin, he reaches up and rests his hand on the gutter. After the reverse shot of Alice, both of his arms are at his sides. When Annie jumps from Mrs. Voorhees' jeep, a beige elbow pad can be clearly seen on her right elbow. When Annie trips in the forest and is backing up against the tree, in each shot her hair is in different positions with varying amounts of leaves in it. When Ned is pretending to drown, all the people run and dive off of the dock and swim like mad to get to him, but in the shot where they bring him to the surface, they are all right beside the dock. In the scene where Sgt. Tierney pulls up while Ned is doing the Indian call, Marcie is standing with Brenda and turns her head to look at him. Before turning back around, she noticably looks straight at the camera for a second or two. When everyone is looking for the snake under the bed, Alice first lifts up the sheet and then in the next shot it is Marcie lifting the sheet and Alice is behind her. When Alice is scared by Crazy Ralph in the pantry she screams and Marcie and Ned start to run in. In the shot of Alice's first reaction, a shadow can clearly be seen of them coming to help, but then in the next shot of Alice, they start to run in again from the same position. Ned is eating a hamburger when he runs to Alice's aid, but it is only in the next scene that they are preparing the hamburgers in the kitchen. Crazy Ralph had propped his bicycle against a tree just outside the front door of the cabin. Why didn’t anybody notice his bike sitting right out there in the open? The lightning on Marcie and Jack is obviously not lightning. Lightning has a blue tinge, and it's obvious a large yellow light was flashed at their faces. Just before Jack's death, he is smoking a joint and both of his arms are out in front of him. When it cuts to the side shot of him being stabbed, both of his arms are stiffly at his sides. Also the position of the killer's arm changes from the overhead shot to the close-up shot. When Jack gets an arrow through his neck, look closely under his chin and you can see the line between Jack's head and the fake neck. How is the killer able to thrust an arrow through the matress and through Jack's neck from under the bed? There is only a small amount of room to move under there. When Marcie goes to look behind the shower curtain, a large line runs up the left side of the film. (This line was corrected in the boxset.) Outside the diner it is obviously a fire hose being sprayed back and forth to cause the rain. Why would Brenda walk all the way through the rain to the communal bathrooms only to brush her teeth and wash her face when a sink is clearly shown in her own cabin? EXPLANATION - Maybe the plumbing to the cabins was questionable, considering that they were busy fixing up the place. When Brenda goes out into the rain because she hears a voice, it is definitely a child's voice that says, "Help me please, Heeelp!" You can hear the voice break like a child's, something Mrs. Voorhees could not and does not do. When Steve's jeep won't start, you hear him cranking away and the battery dies. But while trying to start the car, the headlights stay bright instead of dimming as they would if the battery had actually died. When Sgt. Tierney is giving Steve a ride, he gets a call on his radio. As he is replacing the receiver, he flips on the lights. In the next shot, the siren lights are off and then they are switched on again. When we see the axe on the pillow there is blood on only one side. Why would Mrs. Voorhees have cleaned one side of the axe? While Alice is alone making coffee on a table behind her is a blender and to the right of the blender is sitting a basket of eggs. When Alice returns to the kitchen (after discovering Bill's body) the blender and eggs have switched places. Alice is never shown removing the coffee pot from the burner, but in the next scene, the pot is off the stove. EXPLANATION - She moved it when the camera was not on her. When Alice discovers Bill's body hanging on the door, his right eye twitches slightly. How is Bill's body secured to the door? Archery arrows would not be enough to support his weight. When Alice is making the instant coffee she does not put the lid back on the jar right, it is tilted and sitting on top. Later when Alice comes back to the cabin, the coffee jar is visible in the background with the lid now screwed on right. Brenda's head moves after she is thrown through the window, after we assume she is dead. EXPLANATION - Either she is not completely dead or her head is just settling. After Brenda is thrown through the window, Alice quickly bolts out of the room and throws open the door. As she runs out of the cabin, Mrs. Voorhees pulls up in the jeep. Even had Mrs. Voorhees pushed Brenda through the window, jumped into the jeep and then came down to the cabin from the front, Alice would have heard it. When Alice is charged by Mrs. Voorhees with the knife, she swings once with the fire poker and makes contact, but then it immediately cuts to the same shot of Mrs. Voorhees still charging. When Alice runs to the boathouse where she gets the gun, there are several pieces of wood leaning against it outside to the right. As Alice opens the door and slips inside, one piece of wood falls over diagonally. In subsequent outside shots of the door, the piece of wood is in its original position. The way that the chain and lock is positioned on the drawers with the bullets does not make sense. It is simply looped through the handles, thus all Alice needed to do was pull on the drawer to open it. When Alice and Mrs. Voorhees are battling in the boathouse, Alice is thrown onto a mattress and is then picked up by Mrs. Voorhees in first person perspective. In the next shot, she is shown being picked up again in third person perspective. When Alice finds Steve's body, his wound has moved from his stomach to his chest. When Alice opens the door to hide in the pantry, you can see on the outside that there is no knob, just a black hole. But once Mrs. Voorhees chops through the door, you can clearly see a white knob on the outside. Mrs. Voorhees' arms change position when she is lying on the ground after being hit by Alice with the frying pan. She falls down with her arms above her head but then her left arm is lying on her chest in the next shot. Also, Alice hit her in the face, not the back of the head. When Alice screams and "swings the machete" at Mrs. Voorhees' head, if you look closely you can see she actually is not holding the machete in her hand. When Alice decapitates Mrs. Voorhees, she swings the machete into the left side of Pamela's neck. But the neck opens up on Pamela's right side, making it look like Alice has just knocked Mrs. Voorhees' head off. The hands that reach up and grasp in front of Mrs. Voorhees's neck stump are a pair of man's hands, as evidenced by the hair at the wrists. These hands belonged to Taso Stavrakis, Tom Savini's special FX assistant. After Alice chops Mrs. Voorhees' head off, as she's about to get in the canoe she turns around and stares right at the camera for 1 or 2 seconds. The entire night it has been raining, but when Alice gets in the canoe, there is no water in the bottom at all. When Alice runs to the beach, there is only one canoe sitting there. But when she finally gets in the canoe and pushes off, there are two. The movie is supposed to take place in the summer, but right before Jason jumps up and attacks Alice, in the background the leaves on the trees are fall colors. When Alice is in the hospital, the nurse standing to the left flicks her eyes to look directly at the camera.