Plot hole: Season 6, episode 8 ("Cloak"). Ziva and Tony enter the secure facility by entering a pass code they obtained by watching the guards enter it previously. Once inside, they open another door using a pass code. How did they know that code? It would make no sense to have both locks use the same code, rendering the second door useless.
Plot hole: When Gibbs discovers the body in the hotel room he is on the phone with Kate. As Kate starts to describe the man Suzanne remembered, Gibbs interrupts and describes the dead man, including his tie. The camera then pans over to show the man lying face down. There is no way Gibbs could have seen his tie.
Add timeApril Guthrie Farmer