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Continuity mistake: As they have drinks in the restaurant Marlowe says to Lauren Bacall , "I don't know how far you can go" and she replies, "A lot depends on who's in the saddle" and he goes from having his right hand next to his drink to having both hands around his drink between shots. (01:03:35)

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Deliberate mistake: When the pilots are flying in the airplane there's a strange device above the co-pilots head. Later in the movie we see this same prop used again inside of the spaceship as the alien beauty Tanna opens up the hatch. (00:04:35 - 00:36:30)

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Continuity mistake: Eddie Mars pours Marlowe a drink and he puts the bottle down dead center on a tray on top of the liquor cabinet. He doesn't go near the bottle but later when we see it again it's right of the center of the cabinet, and in the last shot of it it's to the left of the center of the cabinet. (01:08:20 - 01:09:15)

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Continuity mistake: As they have drinks in the restaurant Marlowe says to Lauren Bacall , " Who was it that told you to sugar me off this case, was it Eddie Mars?" and his drink jumps four inches to left between shots in relationship to the plaid tablecloth underneath. (01:03:55)

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Continuity mistake: Marlowe goes into Eddie Mars'place and the butler opens up the door with his left hand while his right hand is at his side. In the next shot his right hand is touching the door. (01:06:00)

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Continuity mistake: Marlowe stands in a doorway and watches Lauren Bacall singing and we see several people walking through the front door behind him. In the next shot there are only two women walking through the front door. (01:06:40)

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Continuity mistake: Lauren Bacall says to Marlowe, "Could that be stretched to include me?" as they sit drinking at the table in the restaurant. If you look closely the amount of ice in her drink changes between shots. (01:02:40)

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Continuity mistake: Lauren Bacall sings "Tears Flowed Like Wine" and in the shots of her from behind the band there are several more extras between her and Marlowe than there are when the camera films her from his vantage point at the door. (01:07:20)

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Continuity mistake: The woman and the gentleman in the tux sitting next to Lauren Bacall are facing forward when we first see them as Lauren sings "Tears Flowed Like Wine". In the next shot the camera angle changes and they have moved ninety degrees and are now facing her. (01:06:45)

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Continuity mistake: When Eddie Mars' pours Marlowe a drink there's a lamp shining on the left of the liquor cabinet. The next time we see this spot the lamp has been moved as the shadows on the liquor cabinet are falling in the opposite direction. (01:09:15)

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Continuity mistake: Inside Eddie Mars' nightclub Marlowe talks to one of the hostesses at the coat check counter. The strap on the pocketbook in front of him is on top of the counter but in the next shot as she walks away the strap is draped over the edge of the counter. (01:06:10)

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Continuity mistake: The co-pilot radios in to Burbank tower in the middle of the night. In the next shot we see the saucer and it's broad daylight. (00:04:30)

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Continuity mistake: The hostess shows Marlowe Eddie Mars' room but in the next shot as he walks into it a table with a statue on it replaces the chair that was there in the previous shot. (01:07:55)

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Visible crew/equipment: At the funeral scene in the beginning of the movie, the wooden crosses added in the cemetery are obvious props. (00:03:40)

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Continuity mistake: Lauren Bacall asks Marlowe, "tell me, what do you usually do when you're not working?" and the matches sticking out of the holder on the table are rearranged between shots. (01:02:30)

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Continuity mistake: In the restaurant Lauren Bacall pays Marlowe and says, "I hope this is satisfactory". When she hands him the check she's holding it from the edge but in the next shot she's holding it from the bottom and he's holding it from the edge. (01:02:10)

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Continuity mistake: Lauren Bacall walks into a restaurant, and sees Marlowe at the bar with his head tilted back as he finishes his drink, and says, "Hello". The guy to the right of Marlowe is looking at the bartender but in the next shot his head has turned ninety degrees as he's now talking to his friend. (01:00:10)

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Continuity mistake: In the DA's office Marlowe says to Capt. Cronjager, " That's all, I was in a tough spot, I was probably wrong but I wanted to protect my client" and Marlowe's hat is on the DA's desk right next to his left arm. In the next shot an ash tray with a smoldering cigarette is next to his left arm (1945 Version on DVD). (01:04:45)

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Continuity mistake: In the DA's office Capt. Cronjager says to Marlowe, " So all you failed to do was report a murder that happened last night?". If you look closely at the far right of the screen there's a shadow on the wall of a female sculpture that wasn't there when we saw this spot at the beginning of the scene when Marlowe and Bernie Ohls walked in (1945 Version on DVD). (01:04:50)

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Continuity mistake: Dist. Atty. White says to Marlowe, "And outside of Taylor, Lundgren and Brody, no one else knew about the Geiger killing?". A black appointment book on the middle of the DA's desk disappears between shots (1945 Version on DVD). (01:04:35)

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