The stack of papers that Marty hands over to the police is shorter than the stack that he pulled from the safe earlier.
In the climactic downhill car chase, KITT's passenger side window alternates between open and closed in different exterior shots.
KITT suggests that Michael ask the local DA to extradite Marty King. Extradition is for people accused of or convicted of a crime. Marty is just an alibi witness Michael wants to talk to. You can't extradite a witness in a case.
At 42:05, Farland's Lincoln changes from a 1976 model into a 1977 model. After the jump is completed, it's a 1976 model again.
When KITT Turbo Boosts over the obstructing truck during the climatic chase of the episode, the shot of the KITT's underside clearly reveals it to have some kind of extra bodywork application underneath, possibly to protect the underside of the car.
One of the internal shots of K.I.T.T. shows a huge unexplained hole in the side of the driver's head restraint, like it has been deliberately cut away for some reason.
As KITT jumps the truck flatbed around 42:50, the bottom of the vehicle is one long, slick piece of silver. Additionally, KITT's jump never noses down but instead reveals this stunt vehicle to be very bottom heavy.
About eight minutes into the episode, as shown on DVD, Michael backs KITT into a parking space at a bar he is investigating. The car has a very visible front pull bar attached to it, under the bumper, that is not normally seen as part of KITT's equipment.
When K.I.T.T. first pulls into the Knight Industries truck, the internal view clearly shows a large portion of the right hand wall completely missing and some papers (possibly script) being held and moved by a person just off camera.
Michael Knight is really Michael Long, who is supposed to be dead. Yet his friend Cheryl Burns phoned him from jail to ask if he could help her out, and apparently reached him easily, despite all of this being a big covert operation. Also, Michael Long underwent plastic surgery. He has a new face. In jail, Cheryl reacts to the new Michael Knight as if nothing's changed.