Factual error: When Mac is held hostage until he can prove that the bank robber did not shoot the manager, he asks for a portable CT machine to be delivered. CT stands for computed tomography which is a machine that takes slice pictures of the body and puts them together to form a whole image. This is why a CT machine has a tube like quality to it, so it can take slice-like pictures around the body. When it arrives the machine is not a CT at all, but an ultrasound. This is made obvious when Mac uses the transducer probe (wand-like attachment) to scan the body. Anyone who has had any of these procedures done, or has seen them in TV shows, or knows how to search images on the internet can see the difference between these two very different machines.
Continuity mistake: When the bank manager's wife is being prepared for autopsy, Sid begins by taking pictures of the wife. In these shots you can see her wrists and ankles are bound with tape. First he cuts off the tape on the ankles and places it in the evidence envelope with Danny and Lindsay. Next he begins to cut the tape from the wrists. As he is doing so, the next shot cuts to a full body view of the wife in which she has the tape back on her ankles again.
Other mistake: The body in the bank has one entry wound because the gun has no kickback, but in the flashback of the manager getting shot the shooter pushes the manager back then shoots him twice, the managers body moving alone would have causes the two bullets to enter at to different points.
Continuity mistake: When they are cutting the tape from the woman found tied to a chair and shot, they cut the tape around her feet and remove then bag it, yet when they start cutting the tape on her hands a few seconds later the woman's feet are taped together again.
Chosen answer: Probably to broaden the scope of the show's plot and give the audience a chance to see the characters in a different setting, People act differently at home from the way they do at their workplace. By the ninth season, the characters would have become overly familiar and predictable. It gives the writers a chance to do something different with them.
raywest ★