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Continuity mistake: As he sits tied up by the couch, Marlowe says to Lauren Bacall, "Take this thing out of my mouth," and his entire face is wet with the water that Pat Clark threw on him. In the next shot as she takes the cigarette out of his mouth before they kiss, his face is almost dry (1945 Version on DVD). (01:42:15)

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Continuity mistake: As Mona Mars throws the water in Marlowe's face some of it splashes on the back of the couch, leaving a stain. In the next shot the pillow to the right of Marlowe's head moves and the couch is dry. (01:39:00)

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Continuity mistake: As they talk after Mona Mars leaves the room, Marlowe says to Lauren Bacal, "Too many people would've seen you without Regan". The cigarette appears then disappears in Marlowe's mouth several times between shots. (01:39:45)

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Continuity mistake: The stewardess comes into the cockpit and holds the clipboard between her folded hands. In the next shot she's holding it with her left hand. (00:28:25)

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Continuity mistake: For some information she has, Marlowe meets Agnes Lowzier in her car at the corner of Rampart and Oakwood and hands her two hundred dollars in a nice neat pile. In the next shot of her counting it, the pile is spread out. (01:32:25)

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Continuity mistake: Marlowe skids off the side of the road in front of Art Huck's garage and takes a gun out from under his dashboard. There's no vent window on the driver's side door of his car but then when he gets out of the car a vent window appears (1945 Version on DVD). (01:36:40)

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Continuity mistake: As Marlowe walks into room 428 in the Fulwider Building the light switch on the right of the door is lit up. In the next shot from the other side of the door it's not. (01:30:00)

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Continuity mistake: When we first see Harry Jones' body lying on the floor his shoulder is even with the split in the two cushions on the left of the couch. In the next shot we see him again lying there and his dead body has moved six inches to the right in relation to the cushions on the couch. (01:32:25)

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Continuity mistake: In his office, Marlowe sits down in a reclining chair as he speaks to Harry Jones. When we first see it the chair is about six inches away from the bookcase but two shots later in a close-up it's right against the bookcase. (01:25:20)

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Continuity mistake: Marlowe walks into Art Huck's garage and Lash Canino says, "You got time to fix his tire?". Canino doesn't move an inch in the 12 seconds between the two shots were we see him but all the stuff behind him is rearranged. Most notable is the lamp used to dry the automotive paint, which if you look at its label, has been rotated 180 degrees without any one going near it. (01:35:45)

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Continuity mistake: Marlowe pulls up in front of Art Huck's garage and gets out of his car to scope out the joint. When he first drives up there are no trees behind him but in the next close-up shot as he opens his car the door, there are several trees behind him. (01:33:40)

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Continuity mistake: As he's tied up in Art Huck's living room, Marlowe says, " you mean Eddie Mars never killed anybody" and Pat Clark's left elbow goes from being at her side to resting on the arm of the chair between shots (1945 Version on DVD). (01:40:45)

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Continuity mistake: In her car Agnes Lowzier looks down as she tells Marlowe, "That's where Eddie Mars' wife is hold up". In the next shot she's facing her right and looking at Marlowe. (01:33:00)

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Continuity mistake: Lash Canino turns out the light after he kills Harry Jones. In the next shot when Marlowe walks into the room the lights are back on. (01:29:40)

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Continuity mistake: When we first see him in Marlowe's office, Harry Jones is standing near the left edge of the desk. In the next shot he moves back about a foot and stands at the center of the desk than later he moves back and is at the edge again. (01:27:05)

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Continuity mistake: Tor Johnson walks to his left past the mausoleum as the ghoul comes out and follows him. He never turns around but two shots later if you look at the head stones, he comes up to the same place again. (00:14:45)

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Continuity mistake: Marlowe follows Agnes Lowzier's tip and drives out to Art Huck's garage and he pulls over to the side of the road in front of a sign that says, "Realito 7 miles". At first the sign is in the dark but in the next shot his headlights light it up. (01:33:15)

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Continuity mistake: Marlowe sits down in a reclining chair as he speaks to Harry Jones and there's a book on the radiator below the window on the right. No one goes near this spot but later in the scene the book moves to the right. (01:24:55 - 01:26:45)

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Continuity mistake: Lash Canino leaves after he kills Harry Jones and Marlowe runs to the door after him. At first he has both hands on the door but in the next shot his left hand is on the sofa. (01:32:10)

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Continuity mistake: As he walks up to Art Huck's garage Marlowe's car is in a totally different position (with the right front tire now on a rock) from when he just skidded off the road. (01:33:55 - 01:34:30)

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