Continuity mistake: Eddie Mars is twirling the key to Geiger's house around his right index finger, but when Marlowe says, "Oh, that's too bad, you got a better one?" and we see him from a different angle he's not doing it. Then in the next shot before he finds the blood stain on the carpet, he's doing again. (00:43:25)
Continuity mistake: In front of Geiger's store, Marlowe gets into a cab and asks the driver to follow a station wagon that's filled with boxes. In the next shot the boxes in the back of the station wagon are rearranged differently. (00:39:10)
Continuity mistake: When Marlowe pulls his car up in front of the Randall Arms Apartments and waits for Lauren Bacall his windshield has two stickers on the left of it. A few shots later after Lauren pulls up he gets out and follows her into the building. The car he's sitting in has changed as we see the shadow of the windshield on the front seat and there are now three stickers on this windshield. (00:47:15)
Continuity mistake: At the roulette table a woman to the right of Eddie Mars puts her chips on number 30 as he speaks to Lauren Bacall. In the next shot as he asks everyone to take their chips off the table there's nothing on number 30. (01:11:35)
Continuity mistake: As Marlowe walks back into Geiger's store the second time the secretary opens up a book with her left hand and proceeds to insert a piece of paper into it with her right. In the next shot the book is closed. (00:37:50)
Continuity mistake: Marlowe says, "Geiger says these are gambling debts?" and Gen. Sternwood goes from holding his left hand in his right to holding his right hand in his left between shots. (00:08:30)
Continuity mistake: Lash Canino's right arm is extended out in front of him as he shoots at Marlowe's car. In the next shot his elbow is at a 45-degree angle as Marlowe confronts him. (01:43:15)
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)
Continuity mistake: Marlowe says to Lauren Bacall as she sits on his desk, "Then outside of what the woman said, you don't know any reason why they want five thousand dollars for it?". Lauren Bacall's right leg is higher than her left leg but then in the next shot they're reversed and her left leg is higher than her right. (00:34:30)
Continuity mistake: Before the altercation with Art Huck, Marlowe goes to his car to get his gun and we see that there's no shrubbery on the right of it. Later he hides behind his car as Lash Canino holds Lauren Bacall hostage and there's a tree right next to him. (01:41:40 - 01:43:10)
Continuity mistake: Marlowe goes home after snooping around Geiger's house and we see the number 206 on his door with the words "Philip Marlowe, Private Investigator" underneath. Later when Inspector Bernie Ohls knocks on the door we see only the number 206 on it as Marlowe opens it. (00:29:20)
Continuity mistake: When Lauren Bacall first meets Marlowe she's pouring a drink and the level of the liquid in the glass goes above her left index finger. In the next shot she's still pouring the drink and the liquid goes above her left index finger a second time. (00:10:00)
Audio problem: Marlowe walks into a room at Eddie Mars' place where Lauren Bacall and some other people are singing. If you look closely at their lips when he first walks in they're singing something else and they're out of sync with what we are hearing. (01:06:35)
Audio problem: As Marlowe walks over to Eddie Mars' room the buzzer over dub doesn't ring when the hostess pushes it and continues after the hostess takes her hand off of it. (01:07:50)
Continuity mistake: In his office, Lauren Bacall talks about Carmen to Marlowe and says, "She was asleep when I left" and her hands are in her lap. In the next shot her left hand is scratching her knee. (00:34:05)
Continuity mistake: In the Hollywood Public Library Marlowe writes "Chevalier Audubon" on the top of a piece of paper and starts writing something else on the second line. In the next shot he's writing on the top of the piece of paper again. (00:13:15)
Continuity mistake: When Canino gets out of his car there are no tire tracks because the dirt underneath has been raked smooth. Later, when Art Huck runs away after Marlowe shoots, we see the same spot and tire tracks now appear under the rear tire. (01:41:30 - 01:42:10)
Continuity mistake: Marlowe takes his hands off the steering wheel as he sits in his parked car waiting for Joe Brody's killer, Carol Lundgren, to walk by. In the next shot his left hand is back on the steering wheel. (00:57:35)
Continuity mistake: When she first meets Marlowe, Lauren Bacall pours her drink and the flask on the liquor table moves to the left in front of the seltzer bottle between shots. (00:10:00)
Continuity mistake: As they talk in Art Huck's living room, Lauren Bacall's cigarette has a nice long ash on it but in the next shot, when she puts it in Marlowe's mouth, there's no ash (1945 Version on DVD). (01:42:05)
