Plot hole: Fletcher and Warren steal what they think is the right paper, so Godber can study it before he sits the exam. They are adamant that he has a very short time to go through it as they have to put it back before anyone misses it. After Godber refuses to cheat by reading it, Fletcher berates him, throws the paper on the cell floor, and storms out. What happened to replacing the stolen exam paper?
Continuity mistake: Interior shots of Ivy's cafe show a window in the back wall of the kitchen, visible through the door to the dining area. Exterior shots of the building show only a plain stone wall where the window should be.
Moving House - S3-E1
Revealing mistake: At the beginning when Frank is directing the vans, we see that one gets its windscreen broken by a ladder from another van. However, the glass breaks just before the ladder touches it.
The Illusion of the Deadly Conglomerate - S1-E18
Continuity mistake: Blake tosses the trick card, and it lands on the lower right side of the target. When Dominick walks over to pull the card free, it has moved itself to the upper left portion of the target. (00:29:20)
Continuity mistake: Bob and Terry go away for the weekend in Bob's car, a blue four door Vauxhall Viva, registration number JCU 331G, but in the next episode "The Expert" they come home in a two door Vauxhall Viva, registration number ALF 132H.
Revealing mistake: 44/34 Nick Newman is hit from behind and knocked unconscious. However, he bows his head and braces for the blow before he is hit. (00:48:00)
A Community of Victims - S3-E3
Continuity mistake: Officer Ripley's shoes change from black to white as he chases the ambulance, then back to black.
Beyond the Farthest Star - S1-E1
Continuity mistake: There is an alien in a Starfleet gold shirt sitting next to Sulu. For a second, there is a human in a Starfleet red shirt, then it goes back to the gold shirt alien.
Revealing mistake: A citizen just reported the armed robbery. In an interior shot of the patrol car, supposedly fast driving down the streets of Manhattan, the pedals of the car are visible in the left part of The Frame; there's no foot on the accelerator. They filmed a close-up of the radio inside a still car. (00:02:35)