NCIS Season 4 Episode 23

While Director Shepherd enjoys being in Paris for an Interpol conference on fighting terrorism, Leroy Jethro Gibbs is designated as acting Director, but couldn't care less for the paperwork, so after only four days Gibbs rather spends his time heading the investigation into the death in a cab of a man on his way to NCIS. Ducky and Abby have a hard time finding the toxic death cause, but the victim is identified as Jemenite embassy gardener (a cover) Jamal Nahan from a list of seven names in his wallet, four of the others are already dead, just not Brown and Smith. The cab driver has a live secret to hide...