Death Grip - S2-E4
Continuity mistake: When Jeff Corwin is explaining to Calleigh and Delko that the tooth they have came from a crocodile instead of an alligator, the jar in Delko's hand very quickly jumps from one hand to the other. (00:25:50)
Death Grip - S2-E4
Other mistake: While irrigating the alligator's stomach a human foot falls out, there is no way a foot that size could fit through that PVC pipe.
Death Grip - S2-E4
Plot hole: There is absolutely nothing that would give Horatio any reason to think the severed arm they found was from a previous victim of their suspect. It doesn't make any sense he would pick something as random as the arm that has no connection (other than it being found during the search for the girl) to the case.
Factual error: One of the police officers makes a comment about an unregistered firearm. Firearms don't need to be registered in Florida.
Continuity mistake: At the beginning the media broadcasts reports about hurricane Andrew, but later into the episode, this changes to Hurricane Anthony as the episode is titled.
Factual error: The stock footage of the bull shark is actually of a Great White.
Revealing mistake: There is a dead (burnt) woman in the morgue. At the end of the episode, Alexx pulls her out of her vault for one last look. When you look at her neck, you will see a pulse. (00:42:30)
Stalkerazzi - S2-E15
Plot hole: The photographer who found the dead guy (Stalkerazzi) told Horatio that he was chasing a black Cadillac Escalade that was chasing the Stalkerazzi's car. He also said that he got stuck behind a truck and that when he finally caught up the Stalkerazzi was dead and there was no sign of the black Escalade. Throughout the rest of the episode nobody does any looking into the black Escalade, asks suspects if they own one or even mention it again. No investigation of the truck that the photographer got stuck behind was shown either. In the same episode Speed tells a cop, while in a tree looking into someone's yard, that they go in through windows if need be to close a case. This is totally inconsistent with the rest of the show and the law. They are always careful about getting search warrants and doing things By the Book.
Character mistake: While discussing the death penalty with Mac, Horatio observes that New York hasn't executed anyone since 1976. The last time New York executed an inmate was actually thirteen years earlier, in 1963.
Continuity mistake: After Dave Penrod jumps from the rooftop to escape from Horatio and Mac, the pair reach the ledge far too quickly from where they were previously, at least a building away.
Factual error: In the scene in the lab where they notice the porn actress's wisdom teeth have not erupted yet, they show her lower jaw with the wisdom tooth just under the gum, but say it is 5 cm under the gum. I don't know about you but if my wisdom tooth was 5 centimetres under the gum, it would be hanging out the bottom of my jaw. (FYI, 5 cm is almost 2 inches.)
Plot hole: Alex determines the actress is only about 18 because her wisdom teeth haven't erupted yet. The problem is they don't always erupt, I'm 32 yrs old and mine have never erupted.