Revealing mistake: When John Garfield is trying to stop Lana Turner from calling the District Attorney, Garfield holds the receiver up in the air off the hook. Then the phone rings. But a phone cannot ring when it is off the hook.
Revealing mistake: In Art Huck's living room before Pat Clark throws water into Marlowe's face, Lauren Bacall's eyes are closed in anticipation of being splattered (1945 Version on DVD). (01:41:30)
Revealing mistake: When CG and IB are on the plane, watch the scenery in the window. It appears to be going in reverse.
Revealing mistake: When Ballin's plane flies and finally crashes, it becomes obvious that the horizon is a still image with the film of the explosion superimposed directly onto it.