The 1951 Chevy driven by Nat Harbin is described as "light gray" over the police radio and in the teletype voice-over, yet the description on the teletype reads that the car is "green."
When Nat returns to the shack after checking out the boat, there is no car outside. When Charlie leaves, suddenly there's Della's car parked right out in front.
In Della's apartment when Nat is on the sofa talking to Della, the top button on Nat's shirt is undone but the shirt is almost closed, but when the camera is moved to Della's right hand side, his shirt top is wide open.
At the fisherman's hut, the various items spread around outside such as oars, boxes and nets appear and disappear or change position with successive clips.
When Charlie calls Della long distance from a phone booth he neglects to tell the operator he wants to make it a collect call and give his name since he didn't deposit any money.
56 minutes into the film, the police teletype reads "LAST SEEN GOING EAST ON BLACK HORSE PIKE AT HAMMONTON." The person reading the teletype says it's the White Horse Pike.