In one scene at about 15:30 Gibbs asks McGee "how long have I been an NCIS special agent". McGee replies "almost 16 years", which Gibbs doesn't dispute. However, 4 years earlier, in the JAG episode "Ice Queen" Gibbs tells LtCmdr Rabb that he has been an NCIS agent for 19 years.
In one scene in Abby's lab a screenshot shows two telephone calls, among others, to the "Culpepper" Cab Company, in the suburban town where the victim lives. The correct spelling is CULPEPER, with only two Ps, not three of them, and the name has no connection with peppers of any type.
The name of the character 'La Grenouille' is consistently mispronounced as 'grehnwee', 'grunoowee' or 'granwee' here and subsequently, by every character except Dr Mallard, who correctly pronounces it as 'grenooyi'.