Continuity mistake: When Ryerston is dead already and is talking with Matt, the autopsy scar next to his neck keeps changing sides.
Salem's Lot (1979)
1 continuity mistake - chronological order
Directed by: Tobe Hooper
Starring: James Mason, Bonnie Bedelia, David Soul, Lance Kerwin
Visible crew/equipment: Young vampire Danny floats away from the window after being confronted with a crucifix. The effect is quickly ruined when the boom he is sitting on can be seen moving him for 8 seconds. (01:43:40)
Ben Mears: You'll have to get some hawthorn.
Susan Norton: Okay.
Ben Mears: And put it all over the house.
Trivia: The scenes where the child vampires float around outside or float into the bedrooms of their victims were partly filmed in reverse to make them seem more "unnatural."