Continuity mistake: As Madeleine tells Kolchak about Madame Trevi being a witch, her right hand is sometimes on Kolchak's left shoulder, sometimes off as the scene cuts.
Continuity mistake: When Kolchak notices a car start up and begins driving towards him, he is close to a red and white sign that says, "Warning", but the next shot of him beginning to run from the car shows him now to be about 4 feet away from the sign and the fence it is posted on.
Continuity mistake: Madelaine's arms instantly switch from crossed to uncrossed when she speaks to Kolchak at Trevi's salon.
Continuity mistake: When Madeleine informs Kolchak she knows when he is lying, Kolchak's hat is riding high above his eyebrows, but when he turns to smash a mirror, his hat is now sitting much lower.
Continuity mistake: The lit flashlight dropped on the floor by the soon-to-be beheaded victim disappears in subsequent shots.
Continuity mistake: When the headless biker attempts to run over Studs Spake, the biker crosses in front of the prone Spake. The instant shot then shows the biker crossing again, but this time behind Spake.
Continuity mistake: When Lila is packing her clothes, she has a black garment in her hands, but the next quick shot shows her hands empty.
Continuity mistake: While arguing with Tony in his office, Kolchak's arm is raised, then is lowered in the next instant cut.
Continuity mistake: Professor Rodriguez points his finger to the map twice as he explains Mexican mythology to Kolchak.
Continuity mistake: When Kolchak enters Pops' store, Pops places his newspaper on the counter. Scene cuts and he still has the newspaper in hand.