Continuity mistake: Captain Molnar's arms go from being in front of his chest to down at his sides and back again as he and Kolchak speak outside the police squad room.
Continuity mistake: Outside the police squad room, Captain Molnar grasps Kolchak's left hand, but the next shot shows Molnar's hands at his sides.
Other mistake: Vincenzo is looking at a photo of the gorilla Kolchak took of it earlier in the episode. It is a side shot, but Kolchak took two pics when he encountered it, one frontal, and the other shot as the creature was running away from Kolchak and the authorities.
Continuity mistake: Mr. Burton and Kolchak each hold a photo of the ape man's foot prints, but the next shot shows Kolchak holding all of the photos.
Horror in the Heights - S1-E11
Continuity mistake: Opening scene shows Kolchak driving his convertible Mustang with the roof top up, but the next shots show the car with the roof top down and stowed.
Horror in the Heights - S1-E11
Continuity mistake: The pencil in Kolchak's left shirt pocket instantly moves from right to left as he gets advice from Miss Emily.
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 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.
Horror in the Heights - S1-E11
Factual error: Outside the Indian restaurant, the street curb is painted red. In Chicago, throughout the 1970s, curbs were painted white or yellow to indicate special parking zones; never red.
Visible crew/equipment: As Mrs. Sherman tries to control her dog, Randolph, a crew member's hand (possibly the dog trainer) is visible on the right side of the screen.
Continuity mistake: As Kolchak talks with Ryder Bond about the Doppelgänger, Bond's left hand instantly goes from being on the piano to his forehead when the scene quick cuts.
Revealing mistake: As Kolchak drives down the street, tall palm trees are visible in the background. Palm trees would not grow in the climate of Chicago in early September, when this episode takes place.
Continuity mistake: As Sgt. Mayer speaks with Mrs. Sherman, Mayer's arms change position from behind his body to crossed, then back as the scene cuts.
Continuity mistake: While George Mason lies on his bed, his hands are crossed on his stomach. In the next shot, before he bursts into flames, his hands are at his sides.
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.
Visible crew/equipment: When Kolchak goes to visit Mr. Cahill in the mental hospital, the boom mike's shadow is visible in several shots.
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.
Visible crew/equipment: A free-standing set light is visible on the right as Kolchak approaches his Mustang outside the witch's house.
Continuity mistake: Kolchak's hands instantly change position as he speaks with Captain Molnar outside the police squad room.
Continuity mistake: While arguing with Tony in his office, Kolchak's arm is raised, then is lowered in the next instant cut.
