Continuity mistake: When Karin takes the gun up to her face to shoot herself, she takes it up to her left ear, but in the next shot the gun is at her right ear.
Plot hole: During David Leigh's narrative about Jim's court case, you are shown a number of newspaper headlines concerning the murders. One shows a shot of Locus looking at camera, with the caption 'Did Locus see his killer?' That shot was on the missing film which was found by David Leigh AFTER the murders were forgotten. So how did the paper get the picture?
Continuity mistake: The young son of the Chinese owner of the violin is near-sighted and his glasses have concave lenses. When he attends the auction as an adult he is far-sighted with incredibly thick convex lenses.
Continuity mistake: Near the end of the film, the writer seeks out one of the locals, and finds him in a corn field digging up pot plants that marijuana growers are trying to grow in his corn field. There is only one problem: It is supposed to be Spring, but the corn is all brown, thus it really is fall or early winter.
Other mistake: Christopher Reeve's nurse has just installed the camera, and they are showing it to Daryl Hannah. During a close-up of Jason Kemp's camera displayed by a monitor, she notices that the woman victim of domestic abuse is wearing too much make-up for that time of the morning, no doubt to hide the results of the beating she took. Jason does not move the camera at that point, but a minute later he (it actually looks like she is the one doing it, but there's an engine buzz so it should be Jason operating it, not her turning it by hand) rotates it to the right. The visual in the monitor is unchanged from earlier even if the camera moved. (00:33:30 - 00:34:30)