Revealing mistake: The effects of the wind blowing at Gale Frazer's Ranch are obviously being produced by a wind machine as only targeted areas of the ranch set are having wind blown at them.
Continuity mistake: In the jail cell with David Vincent, Charlie Gilman's right hand is on his forehead, but the next shot shows his right hand in front of his mouth.
Character mistake: On the witness stand, Janet Wilk speaks of moving "here to Lincoln City", but the episode takes place in Jackson City.
Revealing mistake: In the boiler room fight scene between Wilk and Gilman, the stuntman for actor Don Gordon (Gilman) is obvious by sporting more hair than he should have.
The Spores - S2-E7
Continuity mistake: During the shootout with the aliens at the greenhouse, Sgt. Goldhaver's uniform is covered in dirt. When the shootout ends, his uniform is much cleaner.
The Spores - S2-E7
Plot hole: Hal and Roy could not open the spore case with an electric power drill, but later a married couple pops it open with a hammer and chisel, then much later some children acquire the case and easily open it.
The Spores - S2-E7
Continuity mistake: As Roy returns the case to the diner, Hal is reaching over the steering wheel of his hot rod, but the next quick shot shows him sitting directly behind the steering wheel.
The Spores - S2-E7
Continuity mistake: When Hal examines the case, he has lifted it close to his face, but the next shot shows the case lying flat on the table.
The Spores - S2-E7
Continuity mistake: When Jessup is driving looking for Hal and the others, fields are shown through the drivers' side window, but when the scene cuts, Jessup is suddenly driving through the middle of a housing complex.
The Spores - S2-E7
Continuity mistake: During the fight scene in the diner between Jessup and Vincent, the spore case is about eight feet from Hal, but when he reaches to pick it up, it is only about three feet from him.
The Spores - S2-E7
Continuity mistake: When Hal picks up The Spores case and begins to walk away with it, a water heater is behind him. When the scene cuts to a wider angle he is no longer in front of the water heater but in the middle of the room.
The Spores - S2-E7
Continuity mistake: In the closeup of Tom Jessup's left hand grasping The Spores' case handle, all four fingers and thumb are wrapped around the handle (knuckles up) but the next long shot shows him holding on to the handle with his first three fingers (knuckles down).
The Spores - S2-E7
Continuity mistake: When Tom Jessup grabs Vincent as he tries to steal the spore case, the waitress can be seen through the double door windows watching the action, but the scene then cuts to the dining area and bar, then the waitress turns to watch after hearing the commotion between Jessup and Vincent.
The Spores - S2-E7
Continuity mistake: When David Vincent orders coffee from the waitress, he is standing in front of a cash register but in the next shot he is standing off to the right of the register.
The Spores - S2-E7
Audio problem: When the flower delivery van flies off the asphalt road and into the dirt, a tires-screeching-on-asphalt sound is heard as it hits the dirt before rolling over.
The Spores - S2-E7
Revealing mistake: Gene Hackman's and Roy Thinnes' stunt doubles are obvious during the fight scene in the diner.
Summit Meeting: Part I - S2-E9
Continuity mistake: In the hotel room, Tressider crosses behind Vincent as Vincent puts a cigarette to his lips, but the next shot shows the cigarette down and away from his face.
Summit Meeting: Part I - S2-E9
Continuity mistake: The carrying handle of the TV set in Vincent's hotel room is down in the frontal shots of it, then up in the rear shots of the TV set.
Summit Meeting: Part I - S2-E9
Continuity mistake: David Vincent's view of the lieutenant offering the secretary a cigarette shows the lieutenant's right little finger extended (sign of him being an Invader) but the next quick shot shows the lieutenant's little finger retracted.
Summit Meeting: Part I - S2-E9
Visible crew/equipment: When Vice Chancellor Alquist walks to his Mercedes, camera crew and equipment are reflected in the chrome of the vehicle's engine grill.
